My parking spot is a narrow spot in a covered carport. It's uncomfortable to exit the vehicle when you're in the spot, without risking bumping the door into the next car over.
The shared garage at my workplace is similar.
My brother's home has a parking spot so narrow that you can't exit from the driver's side in an SUV due to a wall, so you have to climb out the passenger side.
My parent's house has a garage used for storage, so there's lots of stuff piled around the car. And there's no direct entrance to the house (except via a ladder up to a hatch).
All of these use-cases would be easier to park if you could get out of the car, and have it pull in and out (drive straight by the length of the vehicle) automatically. It's basically driven by the fact that the space needed to store a car is much smaller than the space needed to store a car with a door open.
This is one of the best features I could ask for in a car, for me.
Your car has dropped you at work and returned home to avoid CBD parking fees. You then summon it to pick you up and drive you home.
You've arrived back from holiday and summon your car to the airport to pick you and the family up.
You are parking your car(s) in the garage so tightly that you can no longer open the doors while inside.
The car is parked a few blocks away and you want it to come and get you from the restaurant where you've just finished dining.
I sure hope this doesn't become the norm. That is double the number of trips clogging the roads.