TBT (Timing Belt Tank)

When putting the ToM together it struck me that the timing belts looks a lot like tank treads when flipped inside out. I think small robots are fun so I decided to try making a chassis based on some 140XL timing belts.
This is the parts that I ordered for eBay;
[Edit] The 300RPM motors where no good as they had to little torque. So go for these;
http://cgi.ebay.com/2x-12V-DC-1000-RPM-Mini-Torque-Gear-Box-Motor-Hobby-/220789730351?pt=LH_DefaultDomain_0&hash=item336817ec2f

http://cgi.ebay.c