I have been driving for many years and it is only with this car that I have had difficulty GUESSTIMATING the position of the corners of the car because of the restricted vision. Or having a clear view of what is close to the back. How many bumps are needed to be able to remember? Not a lot of space in my garage for a large car. Also the power steering seems to make maneuvering in confined spaces more difficult.
Am now going to fit markers on stems at each corner. Tried using a fridge magnet to hold a wire and foam block at a corner and that makes maneuvering VERY easy.
Best would be markers which lay flat until released in some way.
Something should be available and they could be fitted on some cars with a small strong magnet under the corner of the boot lid and under the front corner of the bonnet. Or adhesive or double sided tape etc. Just bend the wire to suit. The small disc or ball at the top of the wire could be black except for the area towards the driver. Maybe a LED.