Andy Grove was once the Chairman of Intel, and is widely considered one of the best minds in American management. Time’s Man of the Year for 1997 isn’t spending his retirement from the chipmaker doing nothing; he’s championing a push to get plug-in hybrid cars on the road ASAP.During the past year and a half, Grove has created his own crash course in electric power, plug-in hybrid vehicles and finding ways of shifting the nation’s fleet of vehicles from gasoline. His goal: To draw more attention to electric