The problem with the bottom side is that they are raised off the build plate. I think it would be cool if this could be remixed to have the colored areas (windows, stripes, logo, etc...) raised to be level with the surface. It would make printing so much easier. I tried to have it put supports under the bottom which helped tremendously, but because of the very small channels it was very hard to get them out cleanly.
Then again, they are decommissioning these here, so they are all beat up at this point in real life. :)