In this episode, motorbike rider Grace shows off three amazing machines that all have tracks! Grace drives a super cool shredder, shows off the massive Nasa crawler and gets to drive a trencher.

In this episode, CBeebies' very own motorbike rider Grace shows off three amazing machines that were made to help people in emergencies. Grace puts out a real fire in an airport fire engine, shows off amazing search-and-rescue helicopters, and drives an ambulance.