Better photos of the grand challenge...

can be found here. I especially like the it's always the little details, or the peanut that would instill fear quotes..

So to make a statistics of what the robots could not do, we have:
- vehicle cannot start again after being stopped to let another vehicle through.
- berms
- barb wires
- wrong direction of the tracks
- too cautious because too big
- bad starts (forgetting gyros, locked up brakes, concrete barriers).

As one can see, it looks like the crux of the issues to be modeled is not the steady state 50 mph straight line road, rather the little things.