I really hope they go mainstream, but it seems they're not targeting the average Joe. If it's going to be an "energy" project, it needs to go mainstream, like the Nissan Leaf or the Chevy Volt. I just don't see why the government should be sponsoring a company that will probably only ever sell to upper and upper-middle class customers.
Don't get me wrong, I love the Tesla company, but I think there were more interesting points of the debate than this. To be fair, Romney didn't single out Tesla; it was lumped in with other projects that haven't proven successful yet.