CBS News Sunday Morning : Season 40 Episode 104

The boom in electric 2-wheel scooters; Gayle King interviews singer Olivia Newton-John, who discusses her career and her cancer battle; host Jane Pauley interviews authors Hillary Rodham Clinton and her daughter, Chelsea Clinton (book, "The Book of Gutsy Women"); Dr. Lonnie Bunch, secretary of the Smithsonian Institution; comic Jim Gaffigan and his wife, Jeannie Gaffigan; glass artist Marlene Rose;