Don't blink! You might miss the racing car whizz past! Technology is behind this super speed and impressive power. New tyre compounds produce top grip and battery upgrades keep electric racing cars accelerating to ever-higher top speeds. Advanced video systems keep a watchful eye on the pits in stock car races and high-tech sensors capture data second by second. Take young readers on a journey through the technology that makes racing cars so amazing. Part of the Tech on Wheels series.