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                                                                    EXHIBIT 4.7a

                                 AMENDMENT NO. 1
                                     TO THE
                                ESCROW AGREEMENT

         This AMENDMENT NO. 1 TO THE ESCROW AGREEMENT (the "Escrow Agreement"),
dated as of March 31, 1998, is made as of May 27, 1998 by and among SUPERSHUTTLE
INTERNATIONAL, INC., a Delaware corporation ("SuperShuttle"); SOUTHERN SHUTTLE
SERVICES, INC., a Florida corporation ("Southern"); AAA WHEELCHAIR WAGON
SERVICES, INC., a Florida corporation ("AAA"); WHEELCHAIR AMBULANCE OF
HOLLYWOOD, INC., a Florida corporation ("Wheelchair Ambulance"); LIMOUSINES OF
SOUTH FLORIDA, INC., a Florida corporation ("LSF"); A1A SNOWBIRD LEASING, INC.,
a Florida corporation ("Snowbird"); Mark Levitt, Karen Caputo and Robert
Siedlecki (the "Shareholders"); and Akerman, Senterfitt & Eidson, P.A. (the
"Escrow Agent").

         Section 2(a)(i) of the Escrow Agreement is hereby amended and restated
in its entirety as follows:

(i)      to the Sellers, in accordance with Schedule A hereof, upon the
         occurrence of any one of the following events (collectively the
         "Recission Events"): (i) if SuperShuttle does not file a registration
         statement for an initial public offering on Form S-1 with the
         Securities and Exchange Commission (the "SEC") by June 8, 1998 to
         register for sale shares of SuperShuttle Common Stock (the "S-1"); (ii)
         if the SEC does not declare such registration statement effective by
         July 31, 1998; (iii) if the underwritten initial registration statement
         for an initial public offering on a firm commitment basis does not
         close by August 10, 1998, providing a per share offering price to the
         public of at least $6.50; or (iv) if Southern fails to obtain the
         written approval, acceptable to SuperShuttle, of the Aviation
         Department of Dade County to the change in ownership of Southern to
         SuperShuttle prior to the effective date of the S-1;

and the following shall be added to the Escrow Agreement as Section 2(c):

(c)      The Sellers' Shares and/or the SuperShuttle Shares shall be released by
         the Escrow Agent only upon written notice by the parties hereto (except
         the Escrow Agent) of the fulfillment or nonfulfillment of the
         conditions set forth in this Section 2.

IN WITNESS WHEREOF, SuperShuttle, Southern AAA, Wheelchair Ambulance, LSF,
Snowbird, the Shareholders and Escrow Agent have caused this Amendment No. 1 to
be executed on the date first written above by their respective officers
thereunder duly authorized.
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                                 SUPERSHUTTLE INTERNATIONAL, INC.,
                                  a Delaware corporation

                                 By: /s/ Thomas C. LaVoy
                                    --------------------------------------------
                                   Thomas C. LaVoy, Chief Financial Officer

                                 AAA WHEELCHAIR WAGON SERVICES,
                                  INC., a Florida corporation

                                 By: /s/ Karen Caputo
                                    --------------------------------------------
                                   Karen Caputo, President

                                 WHEELCHAIR AMBULANCE OF
                                  HOLLYWOOD, INC., a Florida corporation

                                 By: /s/ Karen Caputo
                                    --------------------------------------------
                                   Karen Caputo, President

                                 LIMOUSINES OF SOUTH FLORIDA, INC.,
                                  a Florida corporation

                                 By: /s/ Karen Caputo
                                    --------------------------------------------
                                   Karen Caputo, President

                                 A1A SNOWBIRD LEASING, INC.,
                                  a Florida corporation

                                 By: /s/ Karen Caputo
                                    --------------------------------------------
                                   Karen Caputo, President
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                                 SHAREHOLDERS

                                  /s/ Mark Levitt
                                 -----------------------------------------------
                                 Mark Levitt

                                  /s/ Karen Caputo
                                 -----------------------------------------------
                                 Karen Caputo

                                  /s/ Robert Siedlecki
                                 -----------------------------------------------
                                 Robert Siedlecki

                                 AKERMAN, SENTERFITT & EIDSON, P.A.

                                 By: /s/ J. L. Awner
                                    --------------------------------------------
                                 Name: Jonathan L. Awner
                                      ------------------------------------------
                                 Title: Shareholder - for the Firm
                                       -----------------------------------------
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                                 SOUTHERN SHUTTLE SERVICES, INC.,
                                  a Florida corporation

                                 By: /s/ Mark Levitt
                                    --------------------------------------------
                                  Mark Levitt, President