The Most Dangerous Race (Part 3)
It is the second day of the Big Alpine Race and no one has been able to cross the chasm except for Racer X. In a nearby lodge, Trixie, Sparky, Spritle, and Chim Chim await the passage of the storm. Two drivers deliver the news of what happened at the pass. Trixie and the gang leave in her helicopter to rescue Speed. The next morning, Speed regains consciousness, discovering that he is unable to see. Somehow, he finds the Mach 5 and starts its engine. Snake Oiler cruises by "on his way to victory." Using his acute sense of hearing, Speed follows the sound of Racer X's car, which leads him back onto the racecourse. However, the Mach 5's wheels get stuck and Racer X leaves him behind. What goes around, comes around: Racer X crashes, his legs apparently broken. Speed finds him and, together as a team in the Mach 5, they plan to overtake Snake and win the race.
Aired 21/10/1967EP 11 - The Most Dangerous Race (Part 3)

Speed Racer
The Mach 5 is one of the fastest and most technologically advanced race cars built by man. Equipped with various gadgets and a powerful engine, it provides a challenge for anyone who would dare race against it. The driver of this amazing vehicle is Gou Mifune, a teenager who dreams of breaking into the world of professional racing.
In spite of this, Gou's father and the creator of the Mach 5, Daisuke Mifune, does not want his son anywhere near a racetrack. Undeterred, his girlfriend Michi, younger brother Kurio, and Kurio's monkey sidekick Sanpei become Gou's biggest fans as he sets out to become the greatest racer of all time.
However, Gou soon learns that becoming a professional racer is not easy. From the underhanded plots of corrupt businessmen to stiff competition in the form of his rival, Racer X, Gou faces many obstacles on the road ahead, and has a lot to prove before he can cross the finish line.
(Source: MAL Rewrite)