Risks
The risks of electric or fuel cell cars are underplayed by those who want to push them, but this is not exactly rare for any new technology. I remember battery ideas that involved molten sulfur (!!)
Also, to be fair to electrics, gasoline and propane ain't exactly nonexplosive either. In fact, any method of storing enough energy in a confined space to run a car for hundreds of miles is going to be dangerous to some extent.
As we can see, there can also be a problem with accidental contact with high-voltage elements.