With all due respect, no they don’t, look up some military “all terrain” vehicles. It’s all about distribution and suspension. The first landing is the only hard one, and if necessary we revive the old mars landing system for the 3d robot.

With one “all terrain starship” that can land in dicey spots. We can practice for that on earth!

That ship carries 3d printing and scavenger robots that 1.) bring back both rovers (i understand the contradiction without a flight back but this is murica and NASA needs all the help they can get) 2.) print hundreds of “concrete” landing pads in a small area where the next ships will land. More for redundancy, of course. 3.) gather data for the next mission [refuelling stations, oxygen, and survival]

I’d say 5-10 years once the rocket is reliable