Some body shells for 1/10 scale rc cars would look pretty cool.
But wether it was that or a 1/18 scale replica i would probably buy one depending what car it was.
All you really need to do is contact a few Chinese model manufacturers (you can find hundreds if you look), give em a 3d render as a starting point, say to them "metal body please", tell em your interested in buying 100,000 of em, get them to produce a sample product and send it over to you.
Then buy my 0.35 Megapix digital Camera.
Guaranteed plastic house and lense.
Ergonomic grip.
Discrete color.
Lots of build in ram (I guess it was 8 Mb)
Just one owner, before I bougth it.
Black nylon handstrap.
Power on/off switch.
Viewfinder.
Triggerswitch.
Normal/macro switch.
Memory full indicator.
Choose between two appertures.
Nice print on the front.
Sticker on the bottom.
Rubber thingie on the left side.
Anti handslip system on the back left side.
Thumb dent on the back rigth upper side.
It comes with four used batteries.
You can get a 1:43 FOX for free. You just need to join our race at http://forum.iemit.com and win a race. There are some rules worth to check before you sign up but that's pretty much it. A picture of the first race's winning car can be viewed here already: http://forum.iemit.com/Default.aspx?g=posts&t=91