EXHIBIT 10.5

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF,
AND HAVE NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933 AND MAY NOT BE
SOLD,  TRANSFERRED  OR  ASSIGNED  UNLESS  COVERED BY AN  EFFECTIVE  REGISTRATION
STATEMENT  UNDER SAID ACT, A TRANSFER  MEETING THE  REQUIREMENTS  OF RULE 144 OR
REGULATION S OF THE SECURITIES AND EXCHANGE COMMISSION, OR AN OPINION OF COUNSEL
SATISFACTORY  TO THE ISSUER TO THE EFFECT THAT ANY SUCH  TRANSFER IS EXEMPT FROM
SUCH REGISTRATION.

                             AUTO DATA NETWORK INC.

                      UNSECURED CONVERTIBLE PROMISSORY NOTE

$_______________                                                          [Date]
                                                              New York, New York


1.       PRINCIPAL.

1.1      Auto Data Network Inc., a Delaware  Corporation  (the  "Company"),  for
value received, hereby promises to pay to the order of [Noteholder] or his, her,
their  or  its  assigns  (the   "Investor"   or  the  "Holder")  the  amount  of
_______________________  dollars  ($_________),  as set forth  hereinafter.  All
capitalized  terms used and not otherwise  defined herein shall have the meaning
ascribed to such terms in that certain  Amended and Restated  Agreement and Plan
of  Merger,  dated as of August 2,  2004,  by and among the  Company,  Car Parts
Technologies  Acquisition,  a Delaware corporation and a wholly-owned subsidiary
of the Company and  CarParts  Technologies,  Inc., a Delaware  corporation  (the
"Merger Agreement").

1.2      This  Convertible  Promissory Note (the "Note") shall bear no interest.
This Note shall be due and payable on Holder's  written demand which may be made
on or after  February  28, 2005 (the  "Termination  Date"),  unless this Note is
automatically  converted into shares of the Company's  capital stock pursuant to
Section  1.3 and  Section 3 hereof.  Commencing  on the  Termination  Date,  all
principal hereunder shall be payable upon demand.

1.3      Upon conversion of the principal  hereunder into the Company's  capital
stock  pursuant  to  Section 3 hereof,  this Note  shall be  surrendered  to the
Company for cancellation.

1.4      Payments  are to be made at the  address  of the  Holder  set  forth in
Section 8 below or at such other place in the United  States as the Holder shall
designate  to the Company in writing,  in lawful  money of the United  States of
America.

1.5      This Note is issued pursuant to the Merger Agreement. The provisions of
this Note are a  statement  of the rights of the Holder  and the  conditions  to
which this Note is subject and to which the Holder,  by the  acceptance  of this
Note, agrees.

2.       PREPAYMENT. Notwithstanding anything else set forth herein, the Company
may not pre-pay this Note in whole or in part.


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3.       CONVERSION.

3.1      AUTOMATIC  CONVERSION OF OUTSTANDING  PRINCIPAL.  On February 28, 2005,
the  entire  outstanding  principal  balance  hereunder  shall be  automatically
converted  into a  number  of fully  paid  and  nonassessable  whole  shares  of
Subsequent  Junior Preferred  Stock,  determined in accordance with Section 3.2.
Upon conversion, this Note shall be canceled and no further amounts shall be due
hereunder.

3.2      SHARES  ISSUABLE.  The  number  of whole  shares of  Subsequent  Junior
Preferred Stock (as defined in the Merger Agreement) into which this Note may be
converted  ("Conversion  Shares")  shall be determined by dividing the aggregate
principal  amount  outstanding  hereunder  by the  Second  Valuation  Amount (as
defined in the Merger Agreement).

3.3      DELIVERY OF STOCK  CERTIFICATES.  Upon the  conversion of this Note and
return of the original Note to the Company,  the Company,  at its expense,  will
issue and  deliver  to the  Holder of this Note a  certificate  or  certificates
(bearing such legends as are required by applicable state and federal securities
laws in the opinion of counsel to the  Company) for the number of full shares of
Subsequent  Junior  Preferred Stock issuable upon such conversion and the person
or persons  entitled to receive the shares of the  Subsequent  Junior  Preferred
Stock  issuable  upon such  conversion  shall be treated for all purposes as the
record holders of such shares on such date.

3.4      NO  FRACTIONAL  SHARES.  No  fractional  shares  shall be  issued  upon
conversion of this Note. In lieu of the Company issuing any fractional shares to
the Holder upon the conversion of this Note, the Company shall pay to the Holder
an amount  equal to such  fraction  multiplied  by the fair market  value of the
Common Stock  underlying  such shares as determined by the Board of Directors in
accordance with the Merger Agreement.

3.5      NO RIGHTS AS SHAREHOLDER.  This Note does not entitle the Holder hereof
to any voting  rights or other rights as a  shareholder  of the Company prior to
the conversion hereof.

4.       RESERVATION OF STOCK ISSUABLE UPON CONVERSION. The Company shall at all
times reserve and keep available out of its  authorized  but unissued  shares of
capital  stock,  solely for the purpose of effecting the conversion of the Note,
such number of its shares of Subsequent  Junior  Preferred  Stock (and shares of
its Common Stock for issuance on conversion of such Subsequent  Junior Preferred
Stock) as shall from time to time be sufficient to effect the  conversion of the
Note;  and if at any time the  number  of  authorized  but  unissued  shares  of
Subsequent  Junior  Preferred Stock (and shares of its Common Stock for issuance
on conversion of such Subsequent Junior Preferred Stock) shall not be sufficient
to effect the  conversion  of the entire  outstanding  principal  amount of this
Note, in addition to such other  remedies as shall be available to the Holder of
this Note, the Company will use its best efforts to take such  corporate  action
as may, in the opinion of its counsel,  be necessary to increase its  authorized
but unissued  shares of  Subsequent  Junior  Preferred  Stock (and shares of its
Common Stock for issuance on  conversion  of such  Subsequent  Junior  Preferred
Stock) to such number of shares as shall be sufficient for such purposes.

5.       ASSIGNMENT.  Subject  to the  restrictions  on  transfer  described  in
Section 7 hereof,  the rights and  obligations  of the Company and the Holder of
this Note shall be binding  upon and benefit  the  successors,  assigns,  heirs,
administrators and transferees of the parties. Effective


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upon any such  assignment,  the person or entity to whom such rights,  interests
and  obligations  were  assigned  shall have and  exercise  all of the  Holder's
rights, interests and obligations hereunder as if such person or entity were the
original Holder of this Note.

6.       WAIVER AND AMENDMENT. Any provision of this Note may be amended, waived
or modified (either generally or in a particular instance,  either retroactively
or  prospectively,  and either for a specified period of time or  indefinitely),
upon the written consent of the Company and of the Holder.

7.       TRANSFER OF THIS NOTE OR SECURITIES ISSUABLE ON CONVERSION HEREOF. With
respect to any offer,  sale or other disposition of this Note or securities into
which this Note may be  converted,  the Holder will give  written  notice to the
Company prior thereto, describing briefly the manner thereof. Unless the Company
reasonably  determines  that such transfer would violate  applicable  securities
laws,  or that such transfer  would  adversely  affect the Company's  ability to
account  for  future  transactions  to  which  it is a  party  as a  pooling  of
interests,  and notifies the Holder  thereof within ten (10) business days after
receiving notice of the transfer, the Holder may effect such transfer. Each Note
thus  transferred  and  each   certificate   representing  the  securities  thus
transferred   shall  bear  a  legend  as  to  the  applicable   restrictions  on
transferability in order to ensure compliance with the Securities Act, unless in
the opinion of counsel for the Company  such legend is not  required in order to
ensure  compliance  with the Securities Act. The Company may issue stop transfer
instructions to its transfer agent in connection with such restrictions.

8.       NOTICES. Any notice,  request,  other communication or payment required
or  permitted  hereunder  shall be in  writing  and shall be deemed to have been
given upon  delivery if  personally  delivered,  or five (5) business days after
deposit if  deposited in the United  States mail for mailing by certified  mail,
postage prepaid, and addressed as follows:

         If to Investor:  at the address indicated on the signature page hereto.

         If to Company:                   Auto Data Network Inc.
                                          712 Fifth Avenue
                                          19th Floor
                                          New York, New York 10019
                                          Facsimile: (212) 581-1922
                                          Attention: Christopher R. Glover, CEO

         With a copy to:                  Auto Data Network Inc.
                                          712 Fifth Avenue
                                          19th Floor
                                          New York, New York 10019
                                          Facsimile: (212) 581-1922
                                          Attention: Andrew J. Cosentino

Each of the above addressees may change its address for purposes of this Section
8 by giving to the other  addressee  notice of such new  address in  conformance
with this Section 8.

9.       LOSS,  THEFT OR  DESTRUCTION  OF NOTE.  Upon  receipt by the Company of
evidence reasonably satisfactory to it of the loss, theft or destruction of this
Note and of indemnity or


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security reasonably  satisfactory to it, the Company will make and deliver a new
Note which shall carry the same rights  carried by this Note,  stating that such
Note is issued in  replacement  of this Note,  making  reference to the original
date of issuance of this Note (and any  successors  hereto) and dated as of such
cancellation, in lieu of this Note.

10.      ACCREDITED INVESTOR.  The Holder represents and warrants that he/she/it
is an  "accredited  investor"  within the meaning of the Securities and Exchange
Rule 501 of Regulation D, as presently in effect.

11.      GOVERNING  LAW.  This Note is being  delivered  in and for all purposes
shall be construed in accordance with, and governed by, the laws of the State of
New York, without regard to the conflicts of laws provisions thereof.

12.      WAIVER BY THE  COMPANY.  The  Company  hereby  waives  demand,  notice,
presentment, protest and notice of dishonor.

13.      DELAYS.  No  delay  by the  Holder  in  exercising  any  power or right
hereunder shall operate as a waiver of any power or right.

14.      SEVERABILITY.  If one or more  provisions  of this  Note are held to be
unenforceable  under  applicable law, such provision shall be excluded from this
Note and the balance of the Note shall be  interpreted as if such provision were
so excluded and shall be enforceable in accordance with its terms.

15.      NO IMPAIRMENT.  The Company will not, by any voluntary action, avoid or
seek to avoid the  observance or  performance of any of the terms to be observed
or  performed  hereunder  by the  Company,  but will at all times in good  faith
assist in the carrying out of all the  provisions of this Note and in the taking
of all such action as may be  necessary or  appropriate  in order to protect the
rights of the Holder of this Note against impairment.

               [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK.]


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         IN WITNESS  WHEREOF,  Auto Data Network Inc. has caused this Note to be
executed in its corporate name and this Note to be dated,  issued and delivered,
all on the date first above written.



                             AUTO DATA NETWORK INC.
                             a Delaware corporation



                             By
                               -------------------------------------------------

                             Print Name
                                       -----------------------------------------

                             Title
                                  ----------------------------------------------

Accepted and Agreed to:

                             INITIAL HOLDER:



                             ---------------------------------------------------
                                            Print Name of Holder

                             By
                               -------------------------------------------------
                                                 (Signature)


                             ---------------------------------------------------
                                  (Print Name, if signing on behalf of entity)


                             ---------------------------------------------------
                                            Title (if applicable)

                             Address:
                                      ------------------------------------------

                                      ------------------------------------------

                                      ------------------------------------------


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                                 ASSIGNMENT FORM

                     (To Assign the foregoing Note, execute
                   this form and supply required information.
                   Do not use this form to convert the Note.)




         FOR VALUE RECEIVED,  an interest  corresponding to the unpaid principal
amount  of the  foregoing  Note and all  rights  evidenced  thereby  are  hereby
assigned to


- --------------------------------------------------------------------------------
                                 (Please Print)

         whose address is
                         -------------------------------------------------------






         Dated:
               --------------------------------------

         Holder's Signature:
                              --------------------------------------------------

         Holder's Address:
                              --------------------------------------------------



         Signature Guaranteed:
                              --------------------------------------------------



NOTE:             The signature to this Assignment Form must correspond with the
                  name as it appears on the face of the Note, without alteration
                  or enlargement or any change whatever,  and must be guaranteed
                  by a bank or trust company. Officers of corporations and those
                  acting in a fiduciary or other representative  capacity should
                  file proper  evidence  of  authority  to assign the  foregoing
                  Note.


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