Never driven the tesla so don't know how it drives did drive a few acc cars this year though. Some drive more conservative than you would giving you another second or 2 to react because you know if it's slowing down. Others not so much. The Subaru eyesight for example drives like an old Asian woman, it speeds up and slows down erratically and prefers to brake hard and late. That is really bad design. There is about .5-1.0 seconds to react if it malfunctions or you crash. Honda and Mazda keep a good distance and start to slow down early so you know long before that the system is working correctly. Unfortunately they both kick you out under 30mpg which is kind of stupid because that's the lowest injury risk zone and its rush hour traffic speed so exactly when you need it most. The tech is basicLy ready the bugs are there but they could be patched Quickly if auto manufacturers actually did software updates. I would be happy to own and use the system associated risks and all.