From the submitter:
(actually a trick - the hole in the ceiling is actually a box that is supported by the top of the tree which was cut flat)
Dammit. You had me going there...
Eric Streenstra has created quite the paragon of green energy. And yellow energy. And blue energy. And red energy. You get the idea. This go-kart is still able to... well... go, while being made almost entirely out of LEGOs. I just hope that doesn't include the pedals. I think you know why.