Exhibit 8.1





                                  May 30, 2002




To the Addressees Listed
On Schedule A attached hereto


            Re:    The Issuance and Sale of
            $288,000,000 of Class A-1 1.9291% Asset Backed Notes,
            $335,000,000 of Class A-2 2.70% Asset Backed Notes,
            $365,000,000 of Class A-3 3.58% Asset Backed Notes,
            $345,800,000 of Class A-4 4.21% Asset Backed Notes, and
            $34,200,000 of 4.24% Asset Backed Certificates by Chase
            Manhattan Auto Owner Trust 2002-B
            -------------------------------------------------------

Ladies and Gentlemen:

         We have acted as United States federal tax counsel ("Federal Tax
Counsel") for Chase Manhattan Bank USA, National Association, a national banking
association organized under the laws of the United States (the "Seller"), in
connection with the issuance and sale of (i) $288,000,000 of Class A-1 1.9291%
Asset Backed Notes, (ii) $335,000,000 of Class A-2 2.70% Asset Backed Notes,
(iii) $365,000,000 of Class A-3 3.58% Asset Backed Notes, (iv) $345,800,000 of
Class A-4 4.21% Asset Backed Notes (collectively, the "Notes") and (v)
$34,200,000 of 4.24% Asset Backed Certificates (the "Certificates" and, together
with the Notes, the "Securities"), by Chase Manhattan Auto Owner Trust 2002-B, a
statutory business trust organized under the Business Trust Act of the State of
Delaware (the "Trust"), pursuant to: (a) with respect to the Notes, the
Indenture, dated as of June 1, 2002 (the "Indenture"), between the Trust and
Wells Fargo Bank Minnesota, National Association, as trustee (the "Indenture
Trustee"); and (b) with respect to the Certificates, the Amended and Restated
Trust Agreement, dated as of June 1, 2002 (the "Trust Agreement"), between the
Seller and Wilmington Trust Company, as owner trustee (the "Owner Trustee"). The
Securities will be offered for sale to investors pursuant to the Prospectus
Supplement (the "Prospectus Supplement") to the Prospectus dated January 22,
2002 (the "Prospectus").

         All capitalized terms used in this opinion letter and not otherwise
defined herein shall have the meaning assigned to such terms in the Prospectus
Supplement.

                                      -2-                           May 30, 2002


         In delivering this opinion, we have reviewed: (i) the Prospectus, (ii)
the Prospectus Supplement, (iii) the Indenture, (iv) the Trust Agreement, (v)
the Sale and Servicing Agreement dated as of June 1, 2002 (the "Sale and
Servicing Agreement") between the Seller and the Trust, (vi) forms of the
Securities and (vii) the representation letter to us from the Seller dated May
30, 2002 (the "Representation Letter"). We also have examined such other
documents, papers, statutes and authorities as we have deemed necessary to form
the basis for the opinions expressed herein. In our examination of such
materials, we have assumed the genuineness of all signatures, the authenticity
of all documents submitted to us as originals and the conformity to original
documents of copies of documents submitted to us.

         As to certain matters of fact relevant to the opinions hereinafter
expressed, we have relied upon the representations and warranties set forth in
the Indenture, the Trust Agreement and the Sale and Servicing Agreement. In
addition, we have relied on certain representations made to us by the Seller in
the Representation Letter.

         On the basis of the foregoing and assuming, with your permission, that
(i) the Trust is formed and maintained in accordance with the discussion set
forth in the Prospectus and the Prospectus Supplement and is operated in
compliance with the terms of the Trust Agreement, (ii) the terms of the
Indenture, the Trust Agreement and the Sale and Servicing Agreement are not
amended, (iii) the representations made in the Representation Letter are true
and accurate in all material respects, and (iv) the aggregate amount of the Late
Fees received or accrued each year by the Trust on, or with respect to, the
Receivables will be equal to, or less than, five percent (5%) of the aggregate
amount of the Late Fees and interest or other income accrued or received by the
Trust on, or with respect to, the Receivables each such year, we hereby confirm
(a) our opinions (the "Prospectus Opinions") set forth in the Prospectus
Supplement under the caption "Certain Federal Income Tax Consequences" and (b)
that, subject to the qualifications set forth therein, the statements set forth
in the Prospectus Supplement under the caption "Certain Federal Income Tax
Consequences," insofar as such statements purport to constitute summaries of the
United States federal tax law, regulations or legal conclusions with respect
thereto, constitute accurate summaries of the matters discussed therein in all
material respects.

         We express no opinion with respect to the transactions referred to
herein and in the Prospectus or the Prospectus Supplement other than as
expressly set forth herein. The Prospectus Opinions are not binding on the
Internal Revenue Service ("IRS") and the IRS could disagree with the Prospectus
Opinions. Although we believe that the Prospectus Opinions we express herein
would be sustained if challenged, there can be no assurance that this will be
the case.

         Our opinions are based upon the Code, the Treasury regulations
promulgated thereunder and other relevant authorities and law, all as in effect
on the date hereof. Consequently, future changes in the law may cause the tax
treatment of the transactions referred to herein to be materially different from
that described above.

                                      -3-                           May 30, 2002


         We are members of the Bar of the State of New York, and we do not
express any opinion herein concerning any law other than the federal law of the
United States.

         This opinion letter is rendered to each of the addressees in connection
with the above described transaction. This opinion may not be relied upon by any
such addressee for any other purpose, or relied upon by, or furnished to, any
other person, firm or corporation without our prior written consent.



                                         Very truly yours,



                                         /s/ SIMPSON THACHER & BARTLETT







                          Schedule A to the Tax Opinion
                             Dated May 30, 2002 for
                     Chase Manhattan Auto Owner Trust 2002-B


Chase Manhattan Bank USA, National Association
White Clay Center Building 200
Newark, Delaware 19801

J.P. Morgan Securities Inc.,
  As Representative of the Several
  Underwriters named in Schedule I
  to the Note Underwriting Agreement
270 Park Avenue
New York, New York 10017

J.P. Morgan Securities Inc.
270 Park Avenue
New York, New York 10017

Fitch, Inc.
One State Street Plaza
New York, New York 10004

Moody's Investors Service
99 Church Street
New York, New York 10004

Standard & Poor's Ratings Group
55 Water Street
New York, New York 10041

Wells Fargo Bank Minnesota
National Association
Sixth Street and Marquette Avenue
Minneapolis, Minnesota 55479

Wilmington Trust Company
Rodney Square North
1100 North Market Street
Wilmington, Delaware 19890