I had a couple of Mazda RX-2s. For only 70 cubic inch displacement( I think, it's only been since 1974), they ran crazy fast. I could hold my own against pretty strong small block v-8s. I had one of mine up to 130 m.p.h.(indicated) at 4500 ft. altitude in New Mexico. Too bad the best I could get for fuel mileage was about 18 mpg. That and the tendency to have the rotor seals fail early in the life of the motor pretty much doomed the car at the time for Mazda.
Okay, the engine was 1140 cc which converts to about 70 c.i. Pretty wild huh. It also had a four barrel carb that wouldn't look out of place on a v-8 and the engine produce 130 h.p. Wow! The neat thing about a Wankel is it fires three time per rotor revolution, almost like having a six cylinder engine in a package that you could carry around.
Actually Suzuki must have gotten the bugs out of the design. There are members of the Vintage Japanese Motorcycle Club www.vjmc.org that have over 150,000 miles on Suzuki RE-5s that have never been apart. It would definitely be a cool bike to own. I believe Norton or Triumph also made a rotary powered motorcycle just before they went out of business.