Right, but if you were to change the battery in your Prius (and publish instructions on how to do it) you might void your warranty but you're not going to get s

Right, but if you were to change the battery in your Prius (and publish instructions on how to do it) you might void your warranty but you're not going to get sued under the DMCA. It seems insane to me that something that could have dangerous side effects (changing a battery in a complex vehicle) is less regulated than code.