Kevin & Grant try to survive a 30mph ride through rough terrain in their Off-Road Soap Box Racers. The classic homemade Volcano gets supersized into a 3-stage eruption. Aerodynamics and a 46-year old gridiron record are challenged by a Football Cannon.
|Episode Title:||Backyard Volcano Blowup|
|Airs:||2015-03-14 at urday|