I have an RX8 with the new generation of rotary, the Renesis, and it appears to have all the strengths of the Wankel with none of the drawbacks. It's an incredibly strong powerplant for its diminiuitive size. Super-wide power band and only a handful of moving parts. Mileage could be better, but it's still not bad for a sports car.
The engine in this article looks interesting to me too. I love new motor technology.
The Wankel was way ahead of its time when it first came out. Mazada was the only company to give intrest to it which is a shame as its a very good engine and getting better.
Although nothing sounds like 502c.i. of American Muscle
maybe i'll put one in my X1/9