It is, kind of. The plug is secured by 6 stops (or tabs) along each side. The positive pressure differential pushes the plug outwards into those stops.

To remove the plug you uninstall 4 bolts which allow the plug to go up and over the stops, after which it can hinge outwards on a hinge found at the bottom of the plug.

Source: https://youtu.be/WhfK9jlZK1o?si=dbUV1i2nNFcNixQh

https://en.wikipedia.org/wiki/Wikipedia:Unusual_articles

Apart from the visibility argument. With this kind of parking spot you have to leave the spot in the other direction than you came in. So you’ll only get the enhanced agility for one of the moves.

Would you rather have more agility when getting into the tight parking spot or when leaving onto a larger street?