What I found regarding Lane Keep and Adaptive Cruise Control was much less driving fatigue after a 500 mile trip. I really enjoy the system "backing up" my driving skills during a long trip and as a senior driver, I appreciate the help.While our Lane Keep and Adaptive Cruise Control is pretty close to self driving, I’d never set it on the highway and climb into the back seat. I feel like we have about 90% accuracy and it’s that 10% that takes you through the guardrails down the side of the mountain. So, after having this system which is pretty good but not perfect, would you let a Tesla drive you door to door without constantly watching? I’m still a long way from that.