That's a good point. I did my senior project (mechanical engineer) on the boards. Developed a NiMH replacement to their lead acid batteries which dropped off 10-ish pounds. I also milled out a handle so you can carry it by the back (leave the front two wheels on the ground and roll it like a suitcase). Both of those things combined the board ends up being 18 pounds in your hand. It's totally not stock though, and I sometimes forget that :)