[Swatdude1]

Originally Posted by FIVEPOINTSEVEN

I found these things for sale on ebay...the Australian version of ebay lol.

STEBEL NAUTILUS COMPACT TRUCK HORN 12 Volt 300Hz 134Db - eBay Steering Wheels, Horns, Interior, Car Parts, Accessories, Cars, Bikes, Boats. (end time 12-Apr-08 15:43:34 AEST)

That's the one!! They just came out. The Nautilus technology is pretty simple. It basically winds the normal length of a trombone in an increasing circle like the Nautilus shell. That way it doesn't take up all that space and still gives you that long trombone sound.