I don't know if car horns approach 140db but I'm sure some do. I also am sure that the average driver is separated from his/her horn by a considerable distance, windscreen and other assorted car bits. You'll be bent right over the thing... enjoy. I, like an earlier poster, have never used a horn in anger. Not car, not motorcycle not bicycle. I noticed a few of those peds in the video, after they got startled by the horn kept walking in the same direction as before. The horn didn't warn them as much as frighten the bejesus out of them and piss them off royally. If that's how you want to get your kicks who am I. There is this thing called Karma though, and some time from now when you are in the audiology clinic waiting room to see about your hearing loss, maybe you will remember all the fun you had spiking the pulse rates of innocent pedestrians and other road users.

H