Last week Toot and Puddle, stars of an animated series that airs on Nick Jr. (based on Holly Hobbie's series of picture books with Little, Brown), were seen in train stations in Washington, D.C., and New York City. The duo was promoting the Read & Ride Travel Sweepstakes, sponsored by Amtrak and National Geographic Kids Entertainment, which produces the TV series. The sweepstakes offers a chance to win a three-day trip for four to Washington. The sweepstakes ends tomorrow; to enter, or for more information, visit NG Kids' Toot and Puddle Web site.