The written abbreviation "4WD," which is often found written on the outsides of big jeeps and pickup trucks, in truth means "four wheel drive." I used to believe that it meant "forward," a sort of advertising slogan indicating that anyone who used the car would be able to go forward.
A childhood belief about cars

others believed things like this
- I used to believe that the exhaust fumes coming from a car were actually what pushed it forward like a rocket — rocket car
- i believed that little men sat in the back of vending machines and pushed the sweets forward.— rachael
- I used to believe that the Bible was written by Moses, with God whispering everything in his ear, in English. — Jj
- I used to think my priest was a bit foolish for never having noticed that Dog is God written backwards— anticap
- I used to think that 'non toxic' was a color. I always did wander why is was written on every crayon.— Maddy
- I though the "D" written in "Walt Disney" on some videos was actually a backward "G".
— A. Nonymous