The game is described as a "stunt racer" and puts you in control of one of six cars to race around tracks in order to collect all the coins within the allotted time:
Big Fun Racing (BFR) is a stunt racing game where you race against time to collect coins in various stunt levels. Built upon the NVidia PhysX physics engine this racing game brings great driving physics to the iPhone / iPod Touch. Big Fun Racing has 50 built-in tracks for you to drive in 4 difficulty modes, from easy to ultra hard and additionally there is an "Internet Tracks" game mode where you can download new tracks directly to your device and play those tracks, even when you are offline!
The game is on sale for only $0.99 for the first 24 hours and then goes up to $1.99.