Capt.Bill11
Guru
Ha! No need in the car, of course.
But our small boat (no keel, no autopilot) traveling at displacement speeds (most of the time) wanders a good bit. And the boat forward of the helm is all curved surfaces, with nothing to line up straight ahead.
When I was new to it, and for my guests who are still new to it, the tape sight has been handy. It makes it easy to line up a distant target correctly, and to quickly check and make corrections to stay on target.
Maybe not my BEST technique or invention, but I like it.
If it works for you, that's all that counts.
Especially if you're docking next to my boat.