well Ragsy the tank being modeled after the MAUS was only my suggestion but there are various tank models in real like that use rubber tires rather than tracks but a tank is a big thick honk of solid steel so with tires or tracks either way it'll smash through rubble easily. but its entirely up to u on which tank u want to use as a model. and quick question, will we see images of the tank and mining vehicle once their models are finalized?