[GoldNnasty]

Sorry to put damper on

You will be sought after by the local police, just inquire with authorities.
Train horns are exceptionally LOUD! (probably blow out the trunk, back seat, or window, if installed in the trunk)

I know we all have been cut off and no one pays attention to car horns anyway

Check the web for train horns there are articles about cars with TRAIN horns that have caused accidents and have been liable.

Just put various LEGAL car horns on (sound like major traffic jam).

Unfortunately in Calif. there are sound limits on vehicle horns, just check and see what you can buy in your local auto parts store. You can buy air horns that are more noticeable then the average car manufacture. Try a salvage yard for "Caddie" horns.......they are legal.

(I would love to have a 5 note Leslie train horn for the truck, couldn't afford the air tank and compressor to drive the monster)

Just an FYI not trying to start anything,
Tom