Some sort of anti-flip measure, maybe?
EDIT. heh I don't wanna get all political and stupid, but if someone buys an electric car to be "green", the 1st step would probably be to figure out how your local power plant makes electricity. Unless you live on Hawaii's Big Island, or near Niagara Falls or something, chances are it's fossil fuel or nukes, so your emissions would be going from one exhaust pipe to another, much larger one.
Those new Hyundais are kinda cool though. Iconiq or something like that. I saw one parked the other day and did a double take on it.