I'm sure the gasoline companies would love to keep their 100 percent monopoly on transportation fuel.

There are not a ton of people buying cars - cars are expensive. So people usually go for the cheapest car they can get. And if the price of gasoline falls again, it makes the savings that you get with an electric car harder to realize.

I think electric cars can help save Detroit. They reflect good decision-making, and there has been bad decision making in the auto industry for so long, in my view.

Solar, for example - which has typically been thought of as so expensive - is cheap when compared with, for example, the cost of cleaning up the Fukushima nuclear disaster and the Gulf.

What oil companies don't want you to know is that refineries use a huge amount of electricity in refining gasoline. And that's usually not even figured into reports about gas cars' overall energy use.

Oil companies earned a permanent enemy in me when they messed with the electric car the first time around, and I think they continue to do a disservice in making it seem like fossil fuels are cheaper than they really are in terms of total cost.

Resistance to change is always the biggest obstacle.