Clett-didn't I see something here recently about some Brit engineers using a tiny turbine to drive a generator and recharge a hybrids batteries during hy driving?Nothing new about a turbine,of course,but it could make a gasoline hybrid more competitive with TDI diesel hybrids-which will always be heavier-noisier.A gasoline hybrid has no advantage over a regular gasoline vehicle(in fact,it is heavier,so it is at a disadvantage) and is at great disadvantage in hy cruising vs a diesel(well,it should be,but..).Heck,they could even make the mufflers lighter.
The tiny steam engine is pretty clever-wonder what it weighs?

Charlie