[Porsche-O-Phile]

Very interesting indeed.

A couple of concerns though:

1. Hydraulics mean liquid and liquids create (eventually) leakage problems and weight issues (they're heavy). Don't know if either is a show-stopper, but something to consider...

2. I wonder this about all hybrid vehicles - do their engines use oil accumulators or something? I imagine all the stop/start cycles of the engine shutting off and then being forced back on (with immediate load demands) could lead to premature wear and failure since the lubrication isn't circulating. Wouldn't it be akin to starting your car engine cold and flooring it right away? Not the best thing for it.

Just curious. Very interesting concept though. I think I've seen something similar with pneumatics - can't remember where though.