Koenigsegg called it the “Flower Power” car. Back in 2006, when most supercar builders were focused on ever-increasing muscle, the Swedish automaker decided to combine output with sustainability via ...

Sure, you could likely satiate your lust for speed with any number of mind-blowing and reality-bending supercars… but if you really want to break away from the pack with something that’s as fast as it ...

One of these was a stealthy, satin-black prototype used to help fine-tune the biofuel technology. Now, after years of being tucked away in storage in Norway, chassis No. 7031 is heading to auction at ...