Audi A4 Driving Challenge 2.0 adds cars, graphics
Audi of America has announced the latest version of its iPhone game, Audi A4 Driving Challenge 2.0. The new release adds unlockable cars including the A4 3.2L V6 and R8 sports car. The app also features improved graphics and game play. Users control the vehicle steering with the iPhone accelerometer, tilting the screen to turn left or right. The brake and accelerator are represented with buttons o…