I'm a Railroad Photographer, I've been around trains my hole life, I want a Real Locomotive Horn on my car, no not for every day use, but just something to show off at Train shows n stuff'
Thats a ambitious theme to go for. But keep in mind, most of the board members here do not share the same view as you. And its not like you have made this clear yet. Is the entire car going that train theme?
As a locomotive guy, you know depending on where you live, there are decible levels one needs to abide by for noise pollution. Along with the neon plate, you are drawing more attention to yourself than more you want. Seriously, my wife is an insurance agent, and suggests you may be liable if you cause you accident if you startle someone with a non standard car horn, especially with that magnitude. Its all about safety bottom line.
like I said before, I wont be useing it on the road, infact I cant anyway, I'd hafto get out, go to the trunk, turn on an Air compressor, wait 2-5 minutes, and then it will be able to sound