Thrifty Rent-A-Car System has selected IMRglobal Corp. to develop a fleet management system for the company. The project is aimed at creating a vehicle management and leasing system to replace its existing fleet system. The new system will be Web-enabled and will also integrate vehicle ordering from additional sources, Thrifty says. The future system will also allow the company to expand its vehicle leasing programs, support used car purchasing and leasing, and better serve its network of franchise owners.