Christina Ricci has been cast to play Trixie, Speed's sidekick, in the live action remake of the classic Speed Racer cartoon, due out in 2008.  She will play opposite Emile Hirsch, who has the lead (see 'Lead Cast for Speed Racer').  Susan Sarandon and John Goodman round out the four leads as Speed's parents (see 'Speed Racer's Parents Cast').