do you mean the Stuka dive bomber iwth the sirens on the wings?
its technical name is the Trumpet of Jericho, in German jericho trompete
it's actually quite common, Hollywood stole it and uses it for the supposed whine of any aircraft going into a dive
http://www.youtube.com/watch?v=Irj_jxVxClA
The core joke of Hitchhiker's Guide to the Galaxy is that of course no civilization would develop personal computers with instant remote database recovery, and then waste this technology to find good drinks.
Steve Jobs has ruined this joke.