I used to think that a car's exhaust was what propelled it down the road (much like a jet engine). This was a sound theory for vehicles with dual exhaust, but i was always confused as to what cars with a single tail pipe did not veer to one side.
A childhood belief about cars

others believed things like this
- I used to believe that cars were propelled by their exhaust like some kind of rocket.Anon
- I used to believe that car exhaust pipes were what propelled cars, instead of the engines.— Thomas Johnston
- I used to think that cars were powered by a jet of air which came out of the exhaust.— BadDeal
- Some sport cars have a double exhaust. I wondered why. Why would people want to pollute twice as much?— F*ck the environment?
- I thought that people were like cars because cars have exhaust pipes, and people fart.— Matt
- I used to believe clouds were formed by jets and their exhaust. — Olivia