"only for legal reasons", which tells the target audience that it can fully drive itself, if it was not for these pesky regulations. There is a delightfuly cin

"only for legal reasons", which tells the target audience that it can fully drive itself, if it was not for these pesky regulations. There is a delightfuly cinical alternative interpretation that is also obviously true: the legal reason is that without a human at the wheel it is Tesla who is legally responsible for any damge. Not so with a human at the wheel.