Julian Guthrie chronicles the efforts of Silicon Valley billionaire Larry Ellison to win the America's Cup race and the unexpected assistance he got in "The Billionaire and the Mechanic." Sample passage: Sleek, white and beautiful, 'Sayonara' sailed toward the Southern Ocean, a stretch of sea that circles Antarctica and is home to the world's most treacherous waves. Larry Ellison, at the wheel of his 82-foot, 25-ton maxi yacht, was doing over 20 knots downwind. Feeling the dense air on his face and watching the humidity press against 'Sayonara''s massive mainsail and spinnaker, Larry marveled, 'Even 'Sayonara' isn't supposed to go this fast.'... Something was wrong."