An entire building, modeled in four days.

As part of a construction firm's RFP presentation, I was asked if I could produce a series of images depicting the construction work and the stages of work.  Starting from CAD floor plans - that were sloppy with walls not lining up - it took me about four days to build all 7 floors + basement.  If the CAD plans were perfect, it would have taken me about two days at most.  If I had assumed that the CAD drawings were bad, I would have used AutoCAD to fix them before importing them into SketchUp, which made it monumentally more difficult to fix.