Lousy road runner meep meep Civic horn
I need a louder horn.
A stupid 45 mile per hour lady yapping on a cell phone on the 65 mph freeway slowly swoops into my lane with me in it and the stupid stock Civic horn isn't loud enough for her to hear it over her Bose and Motorola.
What kind of horn upgrades are easy/cheap/quick/effective/etc. Or anything.