There is an optional tow hitch available. I have had one on my Model S (previous and current) for over 3 years, and it works beautifully. It seems your only deal breaker point is that Tesla has not said that it allows towing, but that is pretty much a non event, as you can tow Class I with no problems. I also had a tow hitch on my Priuses, and towed, without Toyota's express permission. Concern over warranty is generally overworked. So, I guess the petition for a tow hitch is not what people really mean. What they want is permission. Right?