The show which modifies cars for speed sees Carolyn Stewart at a track skills day in Kirkistown, where she makes Northern Ireland racing history in a Reliant Robin. Meanwhile, the pressure is on for two teams as they struggle to turn a road car into a show car.

It is judgement day at the Fintona car show for the two teams in the build-off challenge, and Carolyn Stewart has enlisted the help of Miss Northern Ireland for the voting. Also, the Petrolheads Challenge Cup reaches its thrilling climax.