Yeah too bad they dont make solid axles with remote locking diffs, that would be awesome!!!! you could have front or rear dig, or front locked and the rear freewheel and vice versa, or all locked! from what i gathered off of one of the videos of the traxxas guy being interviewed on you tube, it does all those things.

EDIT: I bet its not long before we see those type of axles on the market. i would guess you could easily get $100 to $150 or more per axle.