Very good game, but if you progress in it and then log in with Google play, if you've already had the game it erases all your cars that you've earned, and all your money. I'd had one of the 500k cars upgraded almost fully. In addition to this, the adds after every single thing you do is annoying - I get after being in a game then returning to the main menu, but you shouldn't have to endear an ad after the speed-trap-style challenges.