Book excerpt: A young-at-heart grandmother wishes to fulfill a life-long dream of crossing America by bicycle. The only one she knows who has the time, energy and guts to go with her is a fellow grandma, younger, stronger, and the complete emotional opposite. Would their opposite personalities cause problems? You bet! Would they make it? Well, you don't get to be old enough to be a grandma by giving up. Read about their adventures and misadventures as they discover their own individual strengths and weaknesses.