[NotSammyHagar]

I'm familiar with several of the pre-tesla lane keeping systems. They were terrible and were notirous for a bit of pinging between the lines. They couldn't see the edges and their algorithms lead to back and forth trying to keep in the lane. Tesla doesn't do that, it's smooth, follows the curve. There could have been a decent one. Lane following is just the smallest thing. It's different than lane departure warnings of course.