The difference is the confidence level. The required level of supervision. Other cars, like Teslas, can “do” this task, but not with enough certainty that they are safe to do it while not being actively monitored by a driver.

Teslas did this years ago. The standard autopilot could do this, at speeds up to 100miles/hour.

Later, they add the nag. 2018 I think.

Yes, at SAE J3016 level 2.