5. The Killdozer
In 2004, Marvin Haymeyer took revenge on a town that he felt wronged him by building the infamous Killdozer. This customized D 355 bulldozer was heavily armored with metal sheets, concrete, and bulletproof plastic. Marvin’s rampage through the city of Granby, Colorado, left destruction in its wake, demonstrating the immense power that a determined individual could wield with a DIY military vehicle.

