Rudy Kurth and the Cat.

Via: faster and faster via: Jalopnik

"Weighing in at around 139kg, the CAT III is built around an extruded aluminum spine, which also serves as the fuel tank. The 500cc three-cylinder engine is quite complex – it’s based on two 350cc Honda twin-cylinder engines. Mr Kurth, probably a talented engineer, used three of the four Honda cylinders to make his own 500cc triple.

The other notable thing about the CAT is that both the front and the side wheels are steered, with the latter turning in proportion to the tracking effect. (Er… no, even we don’t know what that means, but it probably, somehow, adds to the vehicle’s stability and handling prowess.) The CAT III is fitted with tyres designed for the Tyrell P34 six-wheeled Formula One car."