I think TACC would eliminate a lot of stress driving on the highway and especially in stop and go commuting (which I do). However, even if autosteer is reliable 99% of the time, the stories about the 1% of the time where it abruptly and inexplicably steers into the adjacent lane are enough to make me not trust it. Also, often on the forum, people post very smug replies about using it the way it was intended, i.e., holding the wheel. Anyone who has been paying attention since the beginning will know that the holding the wheel thing came about very recently. That was not the intent when autopilot was announced and it was never Elon's intention when he talked about AP before. That is obvious liability language. I'm a big fan of Tesla and have been for a long time. If they can't get AP 1.0 to really work like they wanted, I'm not going to pitch a fit. They are obviously working very hard on bringing about autonomous (or semi-autonomous) driving and it's a difficult challenge. I applaud them for their efforts. But if I can't take my hands off the wheel and chill, I'll never use autosteer. I'm just wondering if they will ever offer TACC as a less costly standalone option. I'm guessing probably not.