Here's something called the Zolfe Orange. It's a composite bodied car over a tubular space frame with integral roll cage. Displayed at the Autosport show, the Zolfe has a 175 horsepower Hayabusa engine with a six speed gearbox for 0-60 in 4.5 seconds, top speed is 135mph. The turbo option ups horsepower to the 300-350 range for 0-60 in 3.5 seconds and top speed around 150mph. Production set for mid 2006.
The company producing this is called Zolfe Sportz but the entry from Pistonheads says it's the product of our old friends at Z Cars who do this sort of thing to all sorts of 4 wheelers. We'll follow up.
See also: Motorcycle Powered Cars