Thanks to a mail from a friend I found the ultimative gadgets every ambulance has to have.
Sorry to say, it is not available in flashing lights, yet.
http://www.bullsballs.com/realbig/truckballs.html
And
http://www.bullsballs.com/redneck/horn/index.html
Available in 2 varieties:
Redneck Horn
What the hell was that maneuver?
What race are you in Shithead?
Son of a Bitch!
Get the hell out of my way!
Are you Freakin blind?
Drivers License, You ought to get one, asswipe!
Put the cell phone down Dickhead.
You're a goddam moron!
Slow down dumbass Wal-mart's open all night!
Hey Hognuts, Who taught you how to drive?
OR
Redneck Naghorn
Why don't you slow the hell down?
What's wrong moron! Can't you stop and ask directions?
Are you freakin blind?
Stop the dam car, Walmart is having a sale!
Turn signal is still on, you old fart!
Pick a lane instead of your nose!
This ain't Daytona, and you aint no Dale Earnhardt!
Pull over and buy me something!
You den't my fender and I'll dent your forehead!
Drivers license... you oughta get one dumbass!
Sound samples available at this homepage.
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