Every car company seems to be guaranteeing autonomous cars before the end of the decade. But the levels of autonomy greatly differ. Some automakers seem to envision a car taking you from place to place, Honda sees it parking itself, if the store lets you.
Parking in a crowded garage is basically the bane of every driver's existence. You have to drive slowly, a turn taken too narrowly can rip off a side of the car, and once you park you're always at risk for door dings. Like in bumper-to-bumper traffic, parking in a garage is a natural place for a car to go autonomous.