But Mann thinks Terrafugia has come closer than anyone to making the flying car a reality. The government has already granted the company's request to use special tires and glass that are lighter than normal automotive ones, to make it easier for the vehicle to fly. The government has also temporarily exempted the Transition from the requirement to equip vehicles with electronic stability control, which would add about six pounds to the vehicle. The Transition is currently going through a battery of automotive crash tests to make sure it meets federal safety standards.