Big trucks don't use any back-up camera. They use their right and left outside mirrors, and nothing else. A semi has a 13'-high x 8.5'-wide x 53'-long trailer attached to a 20' tractor and it backs up, parallel parking into a side space without a camera screen, just the mirrors. Truckers are told, when in doubt, get out of the truck and take a good look at the situation.
With a car you have the the left and right side mirrors, plus the rear view inside mirror, something that most big trucks don't have because the center view is blocked by the trailer or the van box.
In a 2021 Toyota without a cd disc slot, it needs a battery boom box, cd player to make that cd-disk music happen ........ just like a 1971 Buick 225 with a broken radio ........ you keep a boom box on that passenger seat ......... simple .......
