You haven't lived until you've paid municipal taxes to see one of these things at work: https://www.youtube.com/watch?v=rVFFsKArEFk

I've literally watched them approach a pothole full of water, blow the water out with compressed air, retract the blower while the pothole refills, excrete asphalt mix into the watery hole then pat it down and compress it with a roller -- then proceed to the next pothole, driving over and denting the just-"repaired" one.