For $30k, you could get a new Nissan Leaf with ~100 mile range, comparable to the Roadster. For this reason, I don't think your comparison is apt. But yes, $4

For $30k, you could get a new Nissan Leaf with ~100 mile range, comparable to the Roadster. For this reason, I don't think your comparison is apt. But yes, $40k is a lot of money and there are many options--including electric drive.