"Aidan" wrote in message
oups.com...

Andy Dingley wrote:

BMW are experimenting with using the waste heat from an IC engine to
produce steam which drives a motor attached to the main engine.

http://www.gizmag.co.uk/go/4936/

Looking at the pics ( which aren't very clear & I haven't spent very
long looking) it seems they're using the heat from the catalytic
converter as a superheater.

It's overcomplex and cannot compete with the simplicity and efficiency of a
Toyota setup hybrid, which most major companies are adopting.