The BOR 90, a 100-foot trimaran engineered and operated by BMW Oracle Racing, is the official American challenger for the 33rd Americas Cup, which takes place in February 2010. For BMW Oracle to win, they have to beat Alinghi, the reigning vessel from the United Arab Emirates. And they're not taking any chances. The BOR 90 team has designed what is easily the largest "wing sail" ever to be affixed to a boat: A 190-foot, 7,770-pound wing that's 80% bigger than the wing of a 747. And they took it out for a spin for the first time on Tuesday in San Diego's harbour.