I think i've found my dream car!
Christian von Koenigsegg stopped by Jay Leno's garage with his mind-blowing Trevita. Only three of these breathtakingly handbuilt beauties will ever exist. Strip away the carbon fiber and you'll find a bespoke 4.8-liter V8 yielding 1018 hp - same as the Bugatti Veyron at half the weight (Bugatti is 4 wheel drive with 0-60 in 2.5 sces).
Power output: 1018 Bhp at 7000 rpm
Acceleration: 0-100 km/h (0-62 mph) 2.9 seconds
Engine: Koenigsegg aluminium V8,4.8 L, 4 valves per cylinder, double overhead camshafts
VIDEO: Koenigsegg Trevita CCXR - Super Cars - Jay Leno's Garage Start watching @ 4:30 in
VIDEO Engine & Interior: Found this Great Video of it's cousin the Agera on a Race Track, then on a very long straight: Very impressive and noisy, a real sports car

 

Another variation of same manufacturer.
Scanned from a brochure for the coupe, its power output of 1 horsepower per kilogram. It's weight isn't known, but Cars UK says it's lighter than the Agera R and so probably in the area of 1,250 to 1,350 kilograms, and hence, hp.
Apparently only 5 of these will be produced @ $2 million each.