The elephantine rear airfoil bolted to the rear deck of the Dodge Viper ACR is not only highly functional, but it gets credit as being the first mass-produced carbon fiber-reinforced polymer (CFRP) wing on a production car. Rear wings on high performance vehicles are designed to counter lift. Without aerodynamic aids, most vehicles become less stable and have reduced grip as velocities increase (worst case, the vehicle actually flies as did the Mercedes CLR at Le Mans in 1999).
It's got the preposterously huge wing, and race-burlesque stripe job; could this Viper spotted at the Nurburgring possibly be a Viper ACR? The red and black Viper was nabbed on one of the 'Ring's cameras, and there's also reports of a black Viper with graphite stripes tearing around the German racing venue. While the pictures showed up on the Viperclub forums, nobody's got any lap times, unfortunately. Could the ACR turn laps as fast as the scorching GT-R or ZR1? Who knows, but there's no doubt