And we're thinking of something like:
Code:
__ __
|[]\_______/[]|
|[] []|
|[] []|
---------------
With the center wheels dropped a bit, but all wheels driven. Depending on where the centre of gravity is located it begins to approximate a two wheel drive as the majority of the mass will act through the centre axles. As one approaches this state the transverse friction on the wheels preventing skid steering should begin to approach zero.
Of course, building in the wide direction does present other challenges, but also presents other opportunities. We've never built a "wide" robot before, but this year's game has inspried us to try something new.
Jason
P.S. It is the code tag "#" on your editor window that lets you do ASCII art a bit more easily.