The powertrain supplier, speaking of which, recently released a video of the 81-mm quad-turbo, 12.3-liter V16 engine it's developed for the car, reaching 5,007 horsepower on a dynamometer. The screaming sound is unbelievable.

Even if the car, the design of which is inspired by a jet engine, can make good on its audacious claims, the Sixteen won't be street legal. Devel developer Rashid Al-Attari told CNN the Sixteen is "more of a dragster" and says the company is developing two versions permissible on roads: A 2,000-hp V8 and a V16 quad-turbo that makes 3,000 hp. They'll cost $1.6 million and $1.8 million, respectively, though the company apparently has no plans to limit production numbers.