I'm curious if anyone is going to try to build a drive train to actually circumvent the barrier. The only things I can think of to do that would be either rather large wheels or a tread drive (after actually seeing the barrier, normal wheels will likely be an "improbability"
). Then again, the rules are strict enough in regard to passing over the balance boards (G25, G28, G29) that I doubt there will be a need to go over the barrier. Our team has been developing a 6-wheel drive system that we are pretty happy with, because of the increased mobility over the 4-wheel. However, 4-wheel drives will have a fine time navigating the field as well, I think.