The end of the combustion engine as we know it?

[Kezzieboy]

Yeah, what a terrifying thought. I was hoping my generation would finally be the ones to do something about it, but people around my age are still in denial :/

I've been trying to get my head around why rotary engines are so shite for a while now, you'd think that forcing a piston completely in the opposite direction would be less efficient than just nudging it around in a circle, but that's just not the case! Heat losses I guess account for a lot of it, and flame propagation is more complex in that sort of combustion chamber, but still!