That's from a few companies, not most.
Most companies offer adaptive cruise as their base, we've listed them all and they range from low end to super luxury.
And again, even with that it's a more limited, less capable product than what comes free on Tesla.
Kia does it...for example, our *base model* Niro EV.
Hyundai does it....for example, the 55 mpg Ioniq...basically an economy car.
Subaru does it.
Mercedes does it.
Probably others but not worth my time to research any more in depth.
It seems pretty common, and most likely just a reasonably easy software upgrade.
The user friendliness of systems that work this way, vs one that doesn't, is a glaring defect in usability.
For a system that is supposed to make driving more hassle free and relaxing, constantly disengaging and re-engaging AP over and over and over and over with every lane change is a PITA. It really flies in the face of how easy and user friendly Tesla tends to make the entire ownership and driving experience.
Need to drive your car? Just get in and drive. No key. No unlock command. No start button to push. Just get in and drive. Need to stop driving? Just get out and walk away. No need to turn the car off. No key to remember to take with you. No door lock command to worry about.
Auto wipers..mine work great. Washer fluid...my first gallon lasted 5 months because Tesla doesn't spray a quart at a time all over the window and roof of the car. Just a nice efficient spread across the wiper itself. So different, and works so great.
Auto high beam...mine work great, no thought involved, its just automatic.
Leaving for work? Swipe down...navigation. Going home? Swipe down, navigation.
Supercharger integration with the car and navigation. Amazing. Flawless. So much more user friendly than anyone else.
There are soooo many features that just work so simply....
But AP.....engage, disengage, re-engage, disengage, re-engage, over and over and over. Its just dumb.