Hi,I totally agree with you, but, this post is not here to depict reality, obviously. In my opinion, being realistic is fun but asking ourselves "what if" is funnier.So, in this case, like in the short anime movie:" A Farewell To Weapons", by Otomo, what if there is no more roads? No more anything in fact. What if everything is ruined but you still have the need to be active and effective as much as possible in this kind of wrecked environment? As it would be in the future, what if some people has discovered or invented new light alloys, etc? I think this image would be a good add to pursue the reflexion about big legged robots/vehicles. Actually every times you point at something in a picture which seems not possible or not serious to you, maybe you could also apply the question: "but, what if..." after your sentence. I think it may be much more fun and interesting, like starting a good old geek discussion which is always enriching. I made this image for that purpose.Have a good one.