Koenigsegg's claim that the CCXR 'Flower Power' is a green supercar may be stretching the truth a little, but to it's credit it does run on E85 Bioethanol. Being green also doesn't mean being boring. The CCXR outputs an enormous 1018bhp, giving 0-200kmh in 8.5sec and a 250mph max.
Unfortunately, the cost of having 1000bhp and simultaneously pleasing the environment doesn't come cheap. Koenigsegg will relieve your bank balance of half a million pounds for this pleasure!
Just 6 CCXRs were produced with a single (valuable) example being right hand drive.