Nina investigates how cars go around corners - with the help of Belle, her hearing neuron. Engineers Elliot and Lewis visit Nina in her workshop and discover that moving a car's front wheels will move it left or right. Next they visit MacLaren where they find out how a steering wheel moves the car's wheels and makes it go in different directions.

Originally released by BBC Worldwide Learning, 2013. Streaming video file encoded with permission for digital streaming by Infobase on April 29, 2015.