From www.wdwinfo.com

Prince Caspian release to include free subway fare promotion
Nov 26, 2008

Disney is offering free subway rides in select cities as part of the promotion for the release of Narnia's Prince Caspian DVD/Blu-Ray on December 2.

Walt Disney Studios Home Entertainment is using the promotion to mimic the Prince Caspian storyline where the Penvensie kids are taken to Narnia while waiting for a subway.

The tickets will be distributed by street teams at designated subway terminals during the morning rush hour between 7 - 9am in Atlanta, Boston, San Francisco, Chicago and Miami. Commuters simply need to look for signs and a team member to get the free ticket.