???

Clearly you've never lived in the Milwaukee area. For some reason, the
Harley crowd finds it necessary and desireable to drill out their
mufflers almost immediately after bringing their Hog home from the
dealer...

They're ubiquitous in summer, and at least twice as loud as any
airplane short of a Harrier jump jet.

If they did that in my current (New Hampshire) state, or former state (NY)
they would be ticketed by the police. There are noise laws.