A Life-Size Volkswagen Camper Van built with 400,000 pieces of LEGO
Certified Lego master model maker Rene Hoffmeister and Pascal Lenhard used 3d images to figure out how many bricks were necessary to complete the model, but somehow ended up being 20,000 transparent pieces short to construct the vehicle’s windows... More here.
It took many hours for us to build a small LEGO camper van a few years ago. I can't imagine the dedication involved in this.