Are the tanks and vehicles capable of being motorized?
Yes, the T34, T-74, Tiger I, Greif and M8 models have all been motorized using stock LEGO Technic motors and parts. A fully wireless remote controlled version of the T-74 has been made using components available from HiTechnic.com. Update: Unfortunately, HiTechnic has stopped production of their aftermarket RC components. Motorized versions of the kits using alternative methods may be added as an order option in the future.