Let's take a look at 4 stroke engines versus Rotary engines.

These Rotary engines can produce High RPM's and use less parts to do it! If you have never seen these, here is a simple look at the principle of the rotary versus the 4 stroke motor!! Enjoy!

New Gas Direct injection technology

Diesel did this from the beginning and it's about time for Gas technology to do it too. This causes better burning and reduced mileage when done right!