Dragon Booster is a cancelled racing / combat game based on a canadian animated series first broadcast in 2004. The cartoon follows the story of young Artha Penn, a boy who rides Beaucephalis (or “Beau” for short), the dragon of legend. He becomes a Dragon Booster, a hero to protect the world from the impending Dragon-Human war, and to unite humans and dragons for all time. [Info from Wikipedia]
In 2003 Eden Games were working on this project for the Playstation 2 and Xbox, but the game was later cancelled for unknown reasons. A DS version was released in 2005, but it was developed by Konami (KCE Hawaii).
Thanks to Hey Hey for the contribution!