I was thinking that, instead of such an awkwardly high center of gravity, make the legs telescoping. That way, in relatively flat terrain, you don't have to worry about making such a large target, or worry about a nasty cross-wind catching your driver reading a porn and blowing the whole shebang (keep reading....keep reading) over on its side. You can lower the body down to an appropriate level. If you need to traverse a larger obstacle, or do some old-fashioned street-level fighting, you can hydraulically jack your legs up and clear the obstructions. Or go through them, whichever your preference. Still, in an age of anti-gravity drives and hovering speederbikes, one wonders why their troop transports need make contact with the surface at all, becoming "trip" transports. Back to the original topic, though....Star Wars was light-years beyond its time with regards to special effects and filming. Its engineering and sci-fi wasn't that advanced, though, compared to our concepts today, but then again our idea of "scifi" is based on our current technological base and societal concepts of style. Jules Verne was a man of vision, and he had us flying in space-faring dirigibles while wearing vests and cravats and bowler hats. Ya work with what ya got! The AT-AT of "Empire Strikes Back", to me, with its slow approach and massive twin cheek-mounted cannon represent the slow impending approach of an inexorable juggernaut. Fight it, give it your best shot, and you may get in a lucky punch, but you're gonna get steamrolled. Still...its like Life. You gotta give it that shot.