The 2023 Special Meeting of Stockholders of Mobile Infrastructure Corporation will address the following items of business: 1. Approval of an amendment deleting provisions related to roll-up transactions from the Company’s charter, effective immediately prior to the effective time of the Merger (as defined below), or the Charter Amendment Proposal; 2. Approval of the merger of Queen Merger Corp. I (“Merger Sub”), a Maryland corporation and wholly-owned subsidiary of Fifth Wall Acquisition Corp. III, a Cayman Islands exempted company (“FWAC”), with and into the Company with the Company continuing as the surviving entity and immediately following the effectiveness of such merger, the merger of MIC with and into the successor of FWAC after its conversion to a Maryland corporation (“New MIC”), with New MIC continuing as the surviving entity (the “Merger”) pursuant to the terms and subject to the conditions of the Agreement and Plan of Merger, dated as of December 13, 2022, as amended by that certain First Amendment to Agreement and Plan of Merger, dated as of March 23, 2023, as it may be further amended from time to time, by and among FWAC, Merger Sub and MIC, or the Merger Proposal; 3. Approval, by advisory (non-binding) vote, the compensation that may be paid or become payable to the named executive officers of the Company in connection with the Merger; and 4. Approval of the adjournment of the special meeting from time to time, if necessary or appropriate, including to solicit additional proxies in favor of the Charter Amendment Proposal or the Merger Proposal, if there are insufficient votes at the time of such adjournment to approve the Charter Amendment Proposal or the Merger Proposal, such proposal, the Adjournment Proposal. THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” PROPOSALS 1, 2, 3 AND 4. MOBILE INFRASTRUCTURE CORPORATION SPECIAL MEETING OF STOCKHOLDERS [TBD], 2023 AT [TBD], EASTERN TIME www.virtualshareholdermeeting.com/MiCORP2023 Important Notice Regarding the Availability of Proxy Materials: The proxy materials for the 2023 Special Meeting of Stockholders of the Company, including the Company’s proxy statement, are also available on the Internet. To view the proxy materials or vote online or by telephone, please follow the instructions on the reverse side hereof. Please see the Proxy Statement for attendance instructions. D90075-TBD MOBILE INFRASTRUCTURE CORPORATION SPECIAL MEETING OF STOCKHOLDERS [TBD], 2023, [TBD], Eastern time Virtually via the Internet at www.virtualshareholdermeeting.com/MiCORP2023 This proxy is solicited on behalf of the Board of Directors of Mobile Infrastructure Corporation. The undersigned stockholder of the Company hereby appoints Manuel Chavez, III and Stephanie Hogue, or either of them, as proxies for the undersigned, with full power of substitution in each of them, to attend the 2023 Special Meeting of Stockholders of the Company to be held virtually via the Internet at www.virtualshareholdermeeting.com/MiCORP2023, on [TBD], 2023 at [TBD], Eastern time, and any postponement or adjournment thereof, to cast on behalf of the undersigned all the votes that the undersigned is entitled to cast at the meeting and otherwise to represent the undersigned at the meeting with all powers possessed by the undersigned if personally present at the meeting. The undersigned hereby acknowledges receipt of the proxy statement, which includes the Notice of 2023 Special Meeting of Stockholders, each of which is incorporated herein by reference, and revokes any proxy heretofore given with respect to the meeting. THE VOTES ENTITLED TO BE CAST BY THE UNDERSIGNED WILL BE CAST AS INSTRUCTED ON THE REVERSE SIDE HEREOF. IF THIS PROXY IS EXECUTED, BUT NO INSTRUCTION IS GIVEN, THE VOTES ENTITLED TO BE CAST BY THE UNDERSIGNED WILL BE CAST FOR PROPOSALS 1, 2, 3 AND 4. ADDITIONALLY, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE VOTES ENTITLED TO BE CAST BY THE UNDERSIGNED WILL BE CAST BY THE PROXIES, IN THEIR DISCRETION, ON ANY OTHER MATTER THAT MAY PROPERLY COME BEFORE THE MEETING OR AT ANY POSTPONEMENT OR ADJOURNMENT THEREOF. See reverse for instructions on how to authorize a proxy.