The solution is easy. Just apply the same logic that was used to find the individual mandate in Obamacare constitutional. Require everyone in the country to buy a Volt. If they don't, make them pay a penalty tax. Problems solved.

"The very powerful and the very stupid have one thing in common. Instead of altering their views to fit the facts, they alter the facts to fit their views... which can be very uncomfortable if you happen to be one of the facts that needs altering." – The Doctor (Tom Baker)