Where I grew up in Europe we had the 1541 disk drive before the Amiga came. Several people I grew up with had the C64 bread bin, the 1541 floppy drive, the cassette tape and a 9 pin printer. I only met one guy who had an Amstrad.
The adjustment you’re mentioning is most likely the knob for angle adjustment which are used if driving with a heavy load in the back. Some cars has suspension which levels the car automatically, for those the adjustment isn’t necessary.