If your not willing to spend real cash dont play

This game is really unplayable without spending real money. There isnt enough activities to generate coins or gems to make the game entertaining. Most of the time its playing the same level over and over again losing and earning 200 coins for good shifting when a lot of the upgrades cost 3000+ coins and require usually two or more upgrades to beat the level.

Dwheet about Racing Rivals, v5.0.0