Thats it. I'm printing out a sign for the back of my bike today "DOES NOT RESPOND TO HONKING"

I would happily move over if the motorists would roll down their window and ask me politely like a human being. Maybe you have my best interests at heart, its just that that eardrum cracking honk from 2 feet behind me makes you come off as a huge jerk (Especially from your gigantic palace car; if you want to squeeze by people buy a smaller vehicle genius!). Its like coming up behind someone on the sidewalk and just screaming incoherently into their ear, and then expecting them to comply with your request and move.

Hell, if the horn honked to the tune of La Cucuracha I'd probably move.