The Doctor lands at the London2053 annual veteran car rally and helps a driver get his car started just in time for the race. He joins the driver in his car as they set off, observed by spaceships from all across the universe. One of those ships contains the Quarks, still out for revenge. They hijack an AA patrol vehicle and pursue the Doctor. The Doctor thwarts them and his driver wins the race, something he'd never have done without the Quark on his tail.