Ep. 35: Speed tests a supersonic car while Forthebird agents sabotage the vehicle and frame him for the crash.
Aired on November 26, 1967

Vavoom Motor Co. attempts to construct a supersonic automobile, with Speed serving as the test driver. Agents from Forthebird Motor Co. deliberately sabotage the vehicle and falsely accuse Speed of causing the accident. They insist on hiring a new driver, but Speed participates in their selection process and demonstrates his superior driving skills. The Forthebird agents then plant a bomb at the finish line to destroy the car. Spritle overhears their plot and warns Speed. Speed proceeds with the test, successfully breaking the speed record just before the bomb detonates.
Episodes
- Ep. 31 · Fugitive Lawson Lamster seeks to restore his blind daughter's sight after escaping his former criminal partners.
- Ep. 32 · Mach 5 Team Confronts Assassins Targeting Diplomats During Japan Sightseeing Trip
- Ep. 33 · Speed discovers Racer X joins assassins who are then thwarted by his betrayal.
- Ep. 34 · Speed travels to Mexico to secure a serum for the poisoned mayor
- Ep. 35 · Speed tests a supersonic car while Forthebird agents sabotage the vehicle and frame him for the crash.
- Ep. 36 · Speed survives a crash in the jungle and confronts General Smasher's monster army.
- Ep. 37 · Speed, Trixie, Sprytle, and Chim-Chim captured by General Smasher's army
- Ep. 38 · Speed discovers a bomb in the Mach 5 after an assassination attempt on Princess Gracious.
- Ep. 39 · Speed Fakes Death After Assassins Push Him Off a Cliff