Here's a fascinating little programmable desktop robot with wee tracks- Cosmo. If the technology inside him could be transferred to an RC tank, things could get very interesting. Who knows, perhaps it could even be voice operated (as with a version of Mac OS's 'Siri' or the Microsoft equivalent), or even offer company to those 'lonely guys' out there. The software for it is open-source, so that would keep the costs down, I imagine, and for those with a tad above the average model tanker's
grasp of programming (Duhhh-brain to genius range

) the possibilities are tantalising....
and,
"Get your facts first, and then you can distort them as much as you please"- Mark Twain.