MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Think you would have to print everything except the gears and the servo holder. You might be able to glue it together, but would probably still need the screws. And the bearings hold the rear axle and front wheels in place, but you could probably print some bushings the same size if you don't care about the wheels spinning.