[Cthulhu_]

Yeah, it'd need to be combined with research going on atm with bipedal robots; they'd have to be able to keep themselves balanced.

[gadders]

Or just have really heavy "feet". That's what the big block of steel/concrete on the back of a forklift is for.

[TeMPOraL]

Yeah, but automated balancing might be significantly more energy efficient than sticking quater-ton blocks of metals to the feet.

[gadders]

Maybe you could use the extra mass to provide super-protective steel toe caps, as per a comment above :-)