I think Vegetable Oil Fuel Cells are the future of the automotive world. No range limitations exist now. Adapting infra is like adapting new grade of gasoline. Now chronic fuel leakage exists now. Filling the tank is not rocket science. No volumetric energy density problems for the fuel. No fishy &quot;we make this fuel out of natural gas, but don&#x27;t talk about it&quot; shit about it. No need for high pressure containers. And it comes with all the good things that you get from fuel cells, but you can also use it with traditional diesel motors.<p>The problems: Some C02 comes out of the exhaust. But it&#x27;s carbon neutral. Hydrogen has the &quot;water out of tailpipe!&quot; hype about it, but it&#x27;s only really clean if that hydrogen is made with electricity that comes from nuclear  or renewable (and clean) sources. Most hydrogen is produced from natural gas at the moment.<p>The other problem is that we have limited capability to produce vegetable oil. But we also have limited capability to produce hydrogen. With hydrogen you could go with massive increase of nuclear power, and you got it. But currently there is also research for oils produced by seaweeds that looks quite promising.<p>Edit: Seems like Fuel Cell technology would be great, but it&#x27;s held back by hydrogen hype. And hydrogen hype seems to be destined as hype, because hydrogen is freakishly difficult substance to deal with.