If you drive your car like a motorcycle,
then you need a Screaming Banshee!
"A revolutionary warning system" -MotorBeam
The Screaming Banshee system was created to allow you to still give a friendly toot with your stock horn, while also easily blasting a super loud horn for emergencies. This way you can still politely let someone know the light’s turned green, or say hi to a friend. It couldn’t be simpler, just tap the horn to beep it or hold the horn to blast it and at the same time (if desired) the Banshee Horn will pulse your high beam headlights automatically.
Works great for both cars & bikes!