> out of spec has a basic freeway test on youtube - most cars ping pong within lanes

Maybe several years ago. My car stays happily in the center of the lane -and- doesn't veer to the right with offramps, or lane count changes.

One of the problems with some Tesla owners is they buy too fully into the "dinosaur" thinking, and assume that other manufacturers have not adjusted their thinking since the 90s.

My car actively maps the road ahead and will, while staying in lanes, avoid potholes, for one very simple example.

What do curves have to do with adaptive cruise control? That's just keeping a speed and a distance, without randomly hitting the brakes. Other brands do it much better than Tesla at the moment.

The distance is detected by radar or sonar and comes from the front of the car. A curve means you’re no longer dead on to the car in front of you — and in extreme cases, are dead on to a car from another lane. This proved difficult for the radar packages of the 00s