When Gulfstream Park staged the "Race of the Century" 56 years ago this spring, 17,300 fans packed the grandstand. They stared out onto a horseless track, where an empty starting gate was parked ceremonially at the 1 1/4 miles position. They rooted, cursed and cheered home their picks. Not a single person ended up witnessing the race. Yet those in attendance--and a nation of fans who tuned in via the NBC Radio broadcast or read about the outcome in coast-to-coast newspaper coverage--seemed to be in vehement agreement for weeks afterward...