Wow, what a nice article. Especially unbiased considering the publication is a BMW offering. I think most everything said is right on.
Regarding my pet peeve, Tesla Nav (or lack thereof) it is true that if there is no 3G there is no map on the main screen OR on the dash screen. If you want to stop the car, type in some address???? and then hit Navigate the tiny little screen which is blocked by the steering wheel will populate but not with enough detail to get you where you want to go if it is not the specific address you typed in. All in all, it is totally useless for anything other than point to point navigation. Tesla needs to have some level of maps on board and displayed over the main screen. It could easily be done with internal memory or with a finger drive in lieu of a DVD drive like everybody else. The "always up to date" argument supporting Google Maps is ridiculous as things generally don't change that much, that often. I have personally not upgraded any of my 4 previous GPS systems any more often than maybe, four years. they have never failed to get me through. The Tesla system has left me in no-mans-land twice within the 4 weeks I have had it.