True, but those risks can be isolated to an area 100 miles away from a major population mass. With fuel burning cars, the risks can't be shuffled outside of the city and the larger your city, the worse it gets.

Yes, some is still coming from coal but the energy mix is changing.

Coal is now more expensive than natural gas, which is why the coal mines are now shutting down.

In addition, even natural gas is going to have to fight the renewable energy sources as the costs will continue to go down for them.

So I'd rather have the system's efficiencies improve in a few places instead of the tens of millions of cars that would have to be changed in the long run.