Team #2849, Ursa Major, (and I) are going with 12 Wheel Drive.
Why? It seemed like a good idea at the time ;-)
Honestly, because I am paranoid of getting stuck on those bumps and 12WD seemed like a good way to prevent that from happening.
Would 8WD been enough? Perhaps, but with
each new crossing the bump video that gets uploaded to youtube, I grow more convinced that 12WD has its advantages...
Joe J.