One of the biggest advantages of owning a Tesla is that if there ever is a problem with the software, it can be fixed easily and automatically over the air.
.. Unless the OTA update bricks the car instead of just locking you out. I think I'll stick with a good'ol fashioned key. That's a traditional way to get in and start the car, and most motorists are conditioned to that. Not driving somewhere, and then standing forlornly in a car park mashing a phone button and hoping it'll let you in. At least it helps highlight the problems with 'smart' car technology.
