this is a sketch of a rig I've thought up years ago and I think its about time I put a little effort into finally creating it. but I'm going to take my sweet ass time on this one! also that engine would only be one of two and rather than having them connected in line or side by side, turning a single drive shaft by way of two giant cogs, they will be side by side and each have there own drive shaft and each rear axle will have two differentials. by doing that, the engines could be controlled separately and aid in turning, like a tank.