Has John Hennessey ever found a fast car he didn't think he could make faster? His next target is the McLaren MP4-12C, which he's planning to turn the power dial up to a stonkin' 800 hp. Better reach for the fireproof suits, boys, because the flames are comin' this way!

The twin-turbo Hennessey Chevy Camaro makes 815 hp on regular 93 octane. On 104 octane race fuel it does 847 rear-wheel horsepower or nearly 1000 hp at the crank and sounds like the Starship Enterprise landing on an aircraft carrier.