A free app for Android, by GT Action Games.
In this game, the objective is to finish each track as fast as possible. You have a limited amount of fuel, so you have to make sure you use it wisely. You can earn more fuel by taking certain actions, such as going faster or slower than the other cars.
The game has a very intuitive interface, which makes it very easy to play. You just have to select the track, choose a car, and then you can start driving. The game has several different cars, so you can choose the one you like the most.