[zie]

Generic Openpilot out of the box is just super nice cruise control right now. So it can do longitudinal and latitudinal control. So it lane keeps, stays behind the car in front of you, etc.

If you use Sunnypilot or one of the other friendly forks, you can do more, but it's not (currently) to the state of Tesla's FSD.

Personally, I recommend buying it if you do a lot of road trips. It's amazing for that. In/around town it's only useful if you have a lot of stop and go traffic, like if you live in LA or other large car-centric city with a big commute.