The meaning of life has always been 47

I liked the answer from Roger Schank to the Edge survey question: what do you believe and cannot prove. He answered Irrational choices.
A similar thought crossed my mind about the the DARPA Grand Challenge racers being truely artificial intelligence beings. If they are, then we should not be surprised to see one car making it five meters to the finish line of the race and completely stop while the crowd is yelling at it to cross the line, a situation not unlike that of the irrational choice made by the sprinter in "the loneliless of the long distance runner".