[Johnny555]

The car can fully self drive -- it has full control over steering and brakes, can pass other cars and even enter/exit the highway.

My car has limited self-driving, it can only do limited lane keeping or keeping distance from the car in front.

[koyote]

So you're defining it as the capability to automate steering, accelerator and brake? (i.e. the three things that constitute driving)

By that definition self-parking cars can also fully self-drive.

My definition of driving is being able to do all the tasks required to pass a driving test, i.e. driving around a city (intersections, roundabouts etc.), motorway, country road and car parks.