What it is: A track-rated supercar from Dubai.
What's so unbelievable: There are many unbelievable things about Dubai, like the world's tallest building and an airline that still serves food in coach. It's also the origin of the Devel Sixteen, a hyper car with a promised 5,000 horsepower from a sixteen-cylinder engine. Devel quotes a 0-60 mph time of 1.8 seconds, and a top speed of 348 mph, but no one's actually seen one drive yet.