[ECONORAM]

Couldn't resist searching today...
Interesting YouTube video:

http://www.youtube.com/watch?v=CkYE3GuMBqU

and here's the zf webpage with the dynastart: ZF Friedrichshafen AG | Cars | DynaStart®
Not quite the same thing, but still an interesting thought:

http://www.youtube.com/watch?v=ZXkijd6_ECQ

I asked these folks for some info: Dyna Start