that engine is not better its just different. just cause its a rotary dosnt make it any better than a normal piston engine. and anyways oly mazda has those, the best cars in the would donsnt use rotary. and i heard that rotary has high rpm but ends up wearing out really fast because once that triangle stuff wears out theres a leak between the "cylinder" part thingy. unlike piston engines where if the cylinder wears out there are still multi layers of piston rings sealing out the cylinder.