The Napier-Bentley is a vintage racing car; a one-off special built in 1972 by David Llewellyn and Peter Morley.

It was based on a chassis constructed from two 4-litre Bentley sideframe members, shortened and modified to a 10-foot (3.0 m) wheelbase.

Being a W12, the engine has three banks of four very large stub exhausts, one of which points straight out of the side of the car.

The sound of the car has been likened to a World War I biplane or cluster or mortar bombs going off.

Since 1999, the car has been owned by Chris Williams, and coveted by his daughter, Rachael, who wishes to race it as well.