Yu-Gi-Oh! 5D's is a new Yu-Gi-Oh! series which began to air in Japan from April 2, 2008, and replaces Yu-Gi-Oh! Duel Monsters GX (broadcast as Yu-Gi-Oh! GX in the US). 5D's is also the first Yu-Gi-Oh! series to be broadcast in Widescreen.
During the series, the main Duel Disk is a motorcycle called a "Duel Runner" ("D-Wheel" in the Japanese version) and the duelists engage in stadium games called "Turbo Duels" ("Riding Duels" in the Japanese version). Yusei Fudo, the 18 year-old main protagonist, has "Stardust Dragon" as his main card, which is the cover card for the Duelist Genesis trading card set.
As with the previous two series (Yu-Gi-Oh! Duel Monsters and Yu-Gi-Oh! Duel Monsters GX), this series has been acquired by 4Kids Entertainment for broadcasting in the United States in September 2008. It began airing on The CW4Kids, starting from September 13. The English language dub premiered on July 24 at San Diego Comic-Con 2008, where the first English dubbed episode was shown. Like the previous two series, changes have been made to plot, cards, character names and personalities to make the show suitable for a younger age demographic.
Informations from Wikipedia