I took two existing things: http://www.thingiverse.com/thing:26015 (Thanks Masonface) http://www.thingiverse.com/thing:45449 (Thanks Barney) And printed them. The car was done in natural pla, the base was metallic silver abs. The nameplate was created in sketchup, you can create your own. 10% fill, .20 layer thickness, 1 shell. Makerware for both. This was for my 8th grade co2 car champion, he really liked it.