The live - action components of «Speed Racer» include Speed himself (Emile Hirsch, consigned to anonymity again after a breakout performance in «Into the Wild»), who lives with his Mom (Susan Sarandon), Pops (John Goodman), mischievous little brother Spritle (Paulie Litt), pet chimp Chim - Chim (Kenzie and Willy)-- as
well as,
apparently, his mechanic Sparky (Kick Gurry) and his gal -
pal Trixie (Christina Ricci).