Thumb taps and pinky swipes.

Left index finger to accelerate, thumb to brake. Steer with the index- and middle finger on your right hand. No more missing a non-tactile hit area as you may tap anywhere on the screen to perform the action in accordance with the finger you use.

When touch screens get advanced enough to detect individual fingers –and dare I say– distinguish different people, it creates a whole new paradigm in touch interaction; a whole lot of abuse, and plenty of novel applications.