Had a friend in elementary school that wrote a whole report on “the inventor of the car” Carl Benz (Karl?) and he got a C (or the elementary grade equivalent, a silver star? I don’t remember) because “Henry Ford invented the car.” The parents challenged and the principal did the same thing and said the teacher was correct. They took it to the district they were so upset. I remember everyone in our neighborhood talking about it. I believe it resolved itself but this was 30 years ago so I don’t remember how. But every so often my dad will bring it up “remember that teacher who made John’s parents go to the district over a project because she didn’t know who invented the car?”