These "world without" threads will stop someday, I suppose, but . . .

C'mon, now, aren't we all a little pixilated to have bought a rotary engine car? Let's discuss how an all-piston world would be. I'll start. Not so good. :( Rotary makes it :D . But let's dig deeper.

Nobody would say "Wankel". That would be a shame.

Wankel. Wankel Wankel Wankel. Wankel!

Wankle.

:D

Gas-thirsty Wankels raises the demand for, and hence, the price of gas.

Wankel. Wankel Wankel Wankel. Wankel!

Wankle.

:D

As my Irish friends would say, "You bloody wankel!!!" :p