Haha What a Flippin joke this game is..it's the most anti user friendly driving game I've ever played...I played 28 rounds and upgraded as much as allowed with rewards from watching ad's and their was no difference..your laughable idea of this being physics based is bullsh$t ..and the nerve to ask me to pay you? you would have to pay me to play this game.. so let's hear your meaningless reply about how much this game sucks