Motion is the core driver of location here.

BBC: Technology that works behind closed doors

Players act as the driver and use their motion to control speed, direction and ramming abilities.

CNN: Review: The Force proves weak in 'Kinect Star Wars'

The system also allows for direct audio and video connections, allowing the team to watch video streams of the driver or actually see different parts of the car in motion to monitor their performance.

FORBES: Magazine Article