BMW DRM Nurburgrin Group 5 Weister 1977 320i

Sikorsky S-97 helicopter shoots for speed with unusual design. The S-97 will be much faster than conventional helicopters, with a cruising speed of up to 220 knots, or 253 mph, according to Sikorsky. The two main rotors of the S-97 are coaxial, and they rotate in opposite directions, driving both lift and forward flight.