Don't bother buying any of the cars to coins or bomb to coins the percentage is so low not worth it. Need for quest so I buy it get all the way to tunnel 9 it changed 2 cars that's it just a money sink. Like putting the horse head cost at 100000 like mermaid man buy more coins. update so they give your more diamonds now but have all but removed coins from the courses . so i guess your supposed to buy money way to ruin a decent game.