On the next episode of Top Gear, Clarkson goes where no man in a small French hatchback has gone before, Hammond finds a novel solution to the problem of airport delays and a trio of super-fast SUVs are on and off the track.
Jeremy heads off to Belfast to give the tiny Renault Twingo 133 an extreme shakedown that involves driving deep into Belfast's new sewer system.
If you've ever been trapped for hours in an airport waiting for a flight, you've probably wondered how a journey involving jet engines can end up being so slow. Well, Hammond is setting out to prove that this needn't be the case by staging a race between some assorted runway support vehicles.
Meanwhile, Sherlock Holmes director Guy Ritchie is our star in a reasonably priced car.
8:30pm, Sunday 6th December on BBC Two