You are now on a car site, so you obviously know at least the basics of how a vehicle works. For example, the fact that engine exhausts get hot when on the run is no witchcraft magic.
So, we agree on the fact that a car's exhaust is made of matter and its temperature fluctuates.
But, have you ever put those two bits of information together in a small test and actually document the result? No? Well, MBWorld forum member fly2nite did, and we can all marvel at the good use of curiosity down below.
Within a time span of what seems like just a few minutes of accelerating his AMG you can see the amount of exhaust growth that happens due to thermal expansion. We found it so fascinating for us that we wished we had been shown this video instead of those boring physics formulas back in school.