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Like Optimus Prime on steroids, this big rig is completely insane! With 24 cylinders and 12 superchargers, this ride is the definition of overkill. Mike Harrah of Caribou Industries Inc. is on a mission to make his ride as big and loud as possible, and this rig has overshot even his own wildest expectations. Meet the V24-71 Detroit Diesel “Big Mike” engine, the largest semi ever built with more than 3,000 hp coming out of a custom built 359 Peterbilt. Take a look at this ridiculous setup in the crazy video above. You almost can’t tell where the engine ends and the cab begins!