Brilliant
I absolutely love this simple solution. As an engineer, I am always trying to find the best way to do something, and this team made a very simple solution. The idea is that the front and back can move in all directions independently. That yellow tube in the middle is a material that allows the front and back to twist and bend in all directions. This is particularly good because it is simple, yet fixes the complexity and weight issues of having full suspension on your chassis.
Taken at the 2012 Colorado Space Grant Robotics Challenge for the Great Sand Dunes National Park in Alamosa.