There used to be a place on the Roadster section of teslamotors.com where you could buy a 3 year extended warranty (covering everything including battery) for $12,500. I think there was a requirement that you buy within 30 or 90 days of your Roadster going out of warranty. I just tried to find it again, but I couldn't find. I'm not sure if it's disappeared or if I just missed it.