Matt Denton was one of the clever engineers responsible for designing and building the functional BB-8 robots and puppets used to film the most recent Star Wars trilogy. But online Denton is probably better known for his clever use of 3D printing to supersize Lego Technic sets, which now includes a functional go-kart he can actually drive On his YouTube channel, Denton has been sharing a series of videos detailing the planning, engineering, and construction of his latest XXL Lego build.