Did You Know?
This was originally pitched by Production I.G. Cartoon Network rejected it but was glad to use it as a replacement for Toonami's Total Immersion Event in September 2003. However, it was so well-received by viewers, and got high ratings to boot, that they decided to go back to Production I.G. to plan and create a full-fledged TV series. See more
Follows Immortal Grand Prix