[CHapstack]

We made pretty much this same prototype last week. We figured that the main difference between this and a 4wd like the kit bot is that the fulcrum at each corner stays closer to the ground than the axle in a 4wd would when going over the bump (so the robot doesn't tilt as much). If you spread the 2 wheels at each corner apart more, the fulcrum will stay even closer to the ground.