I could never go for a car with a tank full of pure hydrogen. If something were to go wrong, I'd be dead before I knew what was happening. You know, someone has already built a facility that can transform stuff that would normally go to the landfill into high-quality petrolium products; we just need to wait for the company to grow enough to start having an impact on the gas prices. Of course, there would need to be a new gas station company, since all of the existing ones seem to be ownd by one fossil fuel refinery or another.