Hi, I don't own a tesla yet, but I am interested an thrilled by the online update capabilities. But how exactly does it work? I imagine it working like on my phone. But then, how secure is it? I have a million questions... Can anybody sitting in a parked car start an available update? Can my kids start the update while I am running to the store? Is my car blocked for the time of the update? Can I emergency start the car in case I need to? There are youtube videos that show parts of the process. They tell about clicking noised and lights going on and error messages beeing displayed. Is it safe to sit in the car while it updates? do the seats move? Has anybody experienced an update failure? will it brick the car? Any comments/discussion is welcome.