Rad Mobile is an arcade Sega racing game from 1991. It was the first appearance of Sonic the Hedgehog... as a windshield ornament! The cars were sprites. Later they released the game retitled Gale Racer for the Sega Saturn with polygon cars.
I recently played the game and found it really challenge to rank high. The game has 20 levels starting in Los Angeles and ending in New York.
