[theprgramerdude]

The middle wheel will simply make it so only a front set and middle set or back set and middle set are on the ground at a time. Thus, it's treated like any four wheel drive, except the issue with this 4 wheel drive will be that half of the mass is located beyond the sliding wheel. It certainly appears that resistance to rotation from robot-to-robot contact will be reduced, but this may be intentional (It's an interesting concept that could be explored, IMO).