[Arschloch]

Yes, let's.  Im'a gonna burn lots of natural resources in this on the weekend:

That sure is more efficient than a Wankel although there are fans of it too. Not sure exactly what they see in it, simplicity of the concept maybe or the power to weight ratio?

[gizzo]

Power to weight for sure.  At least among rotary fans I know. Plus they love the noise.  Can't see a rotisserie being any use as a boat engine, though!