CSR Classics is an online mobile game, drag racing game, take your pick from the finest automobiles ever produced, and win intense drag races, is free to play on Android and iOS devices, from NaturalMotionGames.
Download the game at:
https://play.google.com/store/apps/details?id=com.naturalmotion.csrclassics
https://itunes.apple.com/us/app/csr-classics/id598603610?mt=8