Took a couple of days, but I finished it. The GR-45 medium transport first seen illegally parked on Outer Curved Street in Mos Eisley on Tatooine in Star Wars Episode IV A New Hope. Lights, sounds and scripted loading hatch. It's 75 meters long.
I build most of it with prims that I meshed in Blender to keep the count down. Ended up with less than 30 prims. Here are a few pics, and a link to the build album if you want to see more.