A case in point is [BUM]’s go-kart made entirely from Harbor Freight ... with the same idea as a Power Racer or a Hacky Racer. The chassis, and much of the running gear comes courtesy of a ...

Electric go-karts ... the chassis. I uploaded the files to their site, selected the material, and ordered them. A few days later they were at my doorstep, ready to be installed on the kart.