I had a buddy in college who got so tired of tailgaters that he carved a middle finger out of plywood, wrapped it in Christmas lights, and stuck it in the rear window of his Volkswagen. When someone got too close on the interstate, he flipped a button, and the wooden bird illuminated, letting people know exactly how he felt.
Enterprising motorist Gandeep Singh took that idea to the next level, applying some creative thinking, and installing a 40"x16" led crawler in his rear window to give his road rage a serious edge.
Unfortunately, it looks as if most of Singh's programmed messages are G-rated, but he's apparently working on a Bluetooth cellphone hookup, so you can update your crawler in real time. Follow the jump to watch video of it in use.