The Mammoth Car
- Car: The Mammoth Car(unknown in Speed Racer film)
- Driver: Unknown
- Number: None
- Affiliation/Sponsor: Cruncher Block (Owner)(1967)
- First Appearance: The Race Against the Mammoth Car (Part 1) (1967)
- Other Appearances: The Race Against the Mammoth Car (Part 2) (1967), Speed Racer film (2008)
- The Mammoth Car is a huge, multi-compartment car with a secret just as large as its exterior.