As you say it might be pie in the sky type of thing and may not be practical for every vehicle but I could see buses using it as well as transport trucks. We use diesel electrics in trains why not down scale that to cars,a simple 250cc diesel to charge a battery pack?
Edison killed many dogs,cats and a few pigs trying to diswade the use of Tesla's AC but his DC system was only good for a city block and only useful for lighting.....
BTW it was the storage battery that was Edison's biggest pay day..... Kinda ironic......
PS: Royalties are still paid to this day!
It's interesting that you mention that, since, to my mind, the most compelling product Tesla offers is a home use Li-ion storage battery. Since I'm now living on the west side of town and since the power lines between the station and my house are, at some point (not in the neighborhood) above ground, I installed a whole house genset with auto switching. That's great - BUT... it runs full tilt, whether I'm using 22kw or not.
The Tesla storage battery, for not that much additional cost, would give me a buffer.
https://www.teslamotors.com/powerwall I'd also like to do some PV solar on my land, eventually. These will be fun projects for the future.
As for Chalenge's (never got that spelling... why?) assertion about diversification, I can only agree, though I think the market actually handles this mechanism pretty well. We used to always talk about thresholds in fuel prices... at $3/gal, x alt becomes commercially viable, etc. And most of the large producers with whom we worked (BP - a real freak show) recognized as much and were diversifying to protect themselves.
My recollection, Skuzzy, was that we and Ballard were investigating alterantive metals for the FUel Cell stacks, but I'm long since removed from that research thread.