Today’s featured vehicle Mavis is a creation of Chris Williams, the owner of The Ultimate Laxative Napier Bentley I looked at a couple of years ago.

Mavis is built on a 1930 Bentley Speed 8 chassis which has been extensively modified to accommodate it’s 41.8 litre / 2563 cui V12 motor which was purchased by Williams at the suggestion of Duncan Pittaway.

This particular 1500 hp Packard 4M 2500 V12 is a marine variant of an aero engine that was orignally installed in a 45 mph 2nd World War PT, Patrol Torpedo, boat.

The supercharged Packard M4-2500 has twin exhaust ports and hence is fitted with 24 exhaust pipes, the faux torpedoes are actually oil tanks.

Up to 1500hp is transmitted to the rear wheels through a Bentley C type gearbox that has no synchromesh, note that this vehicle has no front brakes !

The rear wheels can be spun in any gear and Chris Williams “drive it like you stole it” attitude ensures that spectators are entertained with copious quantities of fire from the exhaust and clouds of smoke from the rear wheels at every opportunity.

Chris says that Mavis was once lightheartedly described as “biggest automotive waste of time, money and engineering expertise ever built”.

Thanks for joining me on this “Automotive Waste Of Space” edition of “Gettin’ a li’l psycho on tyres” I hope you will join me again tomorrow when I’ll be looking at an event which returned Motorsport to Hullavington in Wiltshire. Don’t forget to come back now !