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cant remember a game name.?

ok so i was playing this game online think ti was a flash game, i remember it had great graphics for a flash game, also i can remember there where a few charters to play from (it was a driving sort of game) one guy was in a wheelchair with a rocket on the bottom, another was a fat lady in and electric chart another was on a bike with a kid on the back if anyone knows the name please tell me id like to play it again. also it had levels designed by players.