>You mean, like a turbine?

I think he means like a Wankel engine:

http://en.wikipedia.org/wiki/Wankel_engine

> You mean, like a turbine?

There are rotary internal combustion engines, such as the Wankel engine. It has a triangular "rotor-piston" spinning in a circular cylinder and goes through four "strokes" per revolution.

Mazda is a manufacturer that utilizes rotary engines in production cars today, particularly in their high performance models.

http://en.wikipedia.org/wiki/Wankel_engine

They last used it in the RX-8, which they discontinued in 2012.

(at least, for production consumer vehicles)

Ok, I didn't know the RX-8 was discontinued. They do, however, still build the rotary engines for use in racing applications, such as the Star Mazda racing series in the US.

I didn't mean to be picky, I just had some vague memory of an article talking about how no production car was going to have a Wankel anymore and after I checked decided it reasonable to post the clarification.