Also to be found on FR - honda or toyota, I forget which, had an experimental sunlight - to - hydrogen station for refueling fuel cell cars.
Put thos three together, and $50k is probably a high estimate.
I think you could do it now, for $20k in panals, $10k for the cracker, $10k for the fuel cells, and use the rest for plumbing...
Hmmm....I missed that one. Hadn't heard word one about it. If you run across a link, shoot me a Freepmail. In the meanwhile, I'll give Google a go and see what turns up.