<P> E.P. Arnold Royalton, owner of conglomerate Royalton Industries, offers Speed an astoundingly luxurious lifestyle in exchange for signing to race with him . Though tempted, Speed declines due to his father's distrust of power - hungry corporations . Angered, Royalton reveals that for many years, key races have been fixed by corporate interests, including himself, to gain profits . Royalton takes out his anger on Speed by having his drivers force Speed into a crash that destroys the Mach 6 and suing Racer Motors for intellectual property infringement . Speed gets an opportunity to retaliate through Inspector Detector, head of an intelligence agency's corporate crimes division . Racer Taejo Togokahn supposedly has evidence that could indict Royalton but will only offer it up if Speed and the mysterious masked Racer X agree to race on his team in the Casa Cristo 5000, which could also substantially raise the stock price of his family's racing business, blocking a Royalton - arranged buyout . Speed agrees but keeps his decision secret from his family, and Detector's team makes several defensive modifications to the Mach 5 to assist Speed in the rally . </P> <P> After they drive together and work naturally as a team, Speed begins to suspect that Racer X is actually his brother Rex in disguise . His family discovers that he has entered the race and agree to support him . With the help of his family and Trixie, Speed defeats many brutal racers, who were bribed by fixer Cruncher Block to stop him, and overcomes seemingly insurmountable obstacles to win the race, while Detector's team arrests Block . However, Taejo's arrangement is revealed to be a sham, as he was only interested in increasing the value of his family's company to profit from Royalton's buyout . Enraged, Speed hits the track that he used to drive with his brother, and confronts Racer X with his suspicion that he is Rex . Racer X removes his mask, revealing an unfamiliar face, and tells Speed that Rex is indeed dead, but encourages Speed not to let what had transpired change his idea of racing . Speed plans to leave to clear his mind but returns home where he is confronted by Pops . Pops does not prevent Speed from leaving as he is proud of Speed for his cause despite it being in vain, and acknowledges that it was his own stubbornness that drove his son Rex away . Taejo's sister Horuko arrives and gives him Taejo's rejected automatic invitation to the Grand Prix . The Racer family bands together and builds a new Mach 6 in 32 hours . </P> <P> Speed enters the Grand Prix against great odds; Royalton has placed a $1,000,000 bounty on his head that the other drivers are eager to collect, and he is pitted against future Hall of Fame driver Jack "Cannonball" Taylor . Speed overcomes a slow start to catch up with Taylor, who uses a cheating device called a spearhook to latch the Mach 6 to his own car . Speed uses his jump jacks to expose the device to video cameras, causing Taylor to crash . Speed wins the race, having successfully exposed Royalton's crimes . While Racer X watches it is revealed in a flashback montage that he is indeed Rex, who had faked his death by detonating a bomb in his car in the caves and underwent plastic surgery to change his appearance as part of his plan to protect Speed and the sport of racing . He chooses not to reveal his identity to his family, declaring that he must live with his decision . The Racer family celebrates Speed's victory as Speed and Trixie kiss, and Royalton is sent to jail . </P> <Ul> <Li> Emile Hirsch as Speed Racer <Ul> <Li> Nicholas Elia as young Speed Racer </Li> </Ul> </Li> <Li> Christina Ricci as Trixie, Speed's girlfriend . <Ul> <Li> Ariel Winter as young Trixie </Li> </Ul> </Li> <Li> Matthew Fox as Racer X, a mysterious racer who is about 10 years older than Speed and hides his face . </Li> <Li> Rain as Taejo Togokahn, a rookie racer </Li> <Li> John Goodman as Pops Racer, Speed's father </Li> <Li> Susan Sarandon as Mom Racer, Speed's mother </Li> <Li> Scott Porter as Rex Racer </Li> <Li> Paulie Litt as Spritle Racer, Speed's younger brother </Li> <Li> Kick Gurry as Sparky, Speed's mechanic and best friend </Li> <Li> Chim Chim, Spritle's pet chimpanzee and best friend is portrayed by two chimpanzees: "Kenzie" and "Willy". </Li> <Li> Nayo Wallace as Minx, a scientist and Racer X's girlfriend </Li> <Li> Benno Fürmann as Inspector Detector, head of the Corporate Crimes Division, Central Intelligence Bureau </Li> <Li> Togo Igawa as Tetsua Togokahn, Taejo and Horuko's father, and a corporate rival to both Royalton and Musha </Li> <Li> Yu Nan as Horuko Togokahn, Taejo Togokhan's sister </Li> <Li> Roger Allam as E.P. Arnold Royalton, the corrupt owner and CEO of Royalton Industries </Li> <Li> Christian Oliver as Snake Oiler, a shady racer who wears snakeskin racing clothes </Li> <Li> Hiroyuki Sanada as Mr. Musha, president and CEO of Musha Motors </Li> <Li> Richard Roundtree as Ben Burns, a race commentator and former racing champion </Li> <Li> John Benfield as Cruncher Block, a professional race fixer and gang leader </Li> <Li> Ralph Herforth as Jack "Cannonball" Taylor, a superstar racer sponsored by Royalton Industries </Li> </Ul>

What happened to rex racer in speed racer
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