It had to happen. That beep, beep, beep from your car horn is just so yesterday.
Today, for a mere $250 you can tell the guy in front of you what an asshole he is, or the girl, what a hot 'ho.
The mobile audio system enables users to customize the sound their car horn makes with all kinds of sound effects -- from various noises to movie lines to music clips.
The $250 system can store and play 256 MB of audio files, with nine preset buttons...