My mom used to be a bus driver. Back then, the buses had a key, and a special switch that you had to push to turn it off, and if you just took out the key, it wouldn't turn off. She had the kids on the bus believing that she drove the Magic School Bus, because she could pull out the key while driving and the engine would keep running. She avoided the 'change the bus into something' questions by claiming she could only do it on field trips (who knows what she said on field trip days...).
A childhood belief about buses

others believed things like this
- my aunt told us there was a special chemical in the pool that would turn red if we peed in it.Anon
- I used to believe that coin change could turn into actual paper money if you left it alone for a long time. — Marcus O
- I used to believe that a "ghost-driver" was a car driving with a white sheet over it.— Nynke
- i used to believe if i eat fish it would turn my stomach into a fishtank and make me turn into glass.Anon
- When I was young, I thought that when you turn the blinkers on in the car, it made the car turn.— Cassidy
- I used to think Kenny Rogers had 400 children and a crop in the field. Rather than 4 hungry children.Anon