They're not vestigial: Covini supercar with two extra wheels

This Italian oddity made by Covini builds off the legend of the Tyrrell P34, a mid-1970s Formula One car that used the same kind of quad front wheel setup. The design, besides eliciting screams of “Photochop!”, supposedly increases cornering traction and reduces problems caused by punctures and aquaplaning. Other advantages include additional stopping power afforded by the extra clampers, and the stellar agility created through putting less unsprung weight at each wheel. The engine is an Audi V8 and the cost is simply unutterable because your head would explode.