Blowing your air horn when leaving. What do you want man?

A short blast of diesel-rig air horns is great. Not so much the long blasts. That's obnoxious. :(

In the early 1970s I had two Cadillacs with the loud electric horns, then later had a Mercedes-Benz diesel car with high-pitched European sounding twin electric horns. Those cars could all be used as weapons of audio destruction. Nowadays, just normal electric horns - no air horns!