You know when it comes to driving, those who are in front of you are driving too slow, while the person flashing you constantly from the back is a maniac who does not know the meaning of driving recklessly. Well, perhaps you might want to arm yourself with a car horn that will be the envy of even truckers – with this particular car honk mod which is capable of shaking up even the most seasoned truckers. This multi-car horn emulator will sound like more than few cars blaring their horns simultaneously, and this project is cobbled together thanks to cheap Harbor Freight tools air horns. The mod will introduce a couple of buttons on your dashboard, where pressing them together will emit a blast that even an elephant would be proud of. Check out a video of this mod in action after the jump.