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Jamie and Dave compete to see who can build the better amphibious motorcycle.
The brothers attempt to turn a vintage Air Stream trailer into a sleek hovercraft.
The brothers build a mobile speakeasy that runs on home-brewed alcohol; Dave and Jamie make some tough decisions concerning their falling motorcycle shop.
The brothers and their crew covert an ATV into a veggie motorcycle capable of running on fryer grease.
Jamie designs a full-sized remote controlled car using junkyard scraps and a forklift.
The brothers try to create a life-sized flip car without killing themselves in the process.
The brothers create a carnival-style scrambler made out of two minivans connected by an I-beam.
The brothers try to build a giant, walking mechanical spider.
Dave and Jamie use their own teams to design dueling bikes that can run over land and ice.