OK, first of all, this is not going to be the “where does the pothole stuff go?” question. It’s better!
What I’d like to know is: Why don’t rolling road crews ever tamp down the asphalt they dump in the little potholes?
All I’ve ever seen them do is Sloppily throw a shovel full of the stuff somewhere in the direction of the hole and expect you (in your nice shiny new car) to drive over it and basically make the asphalt pile explode!
It would only take an extra second to pat it down. Tap. There! All done!
Needless to say I’m probably biased towards any answer an actual construction worker would give unless it’s laziness.