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- Supersonic "Super Spur" Gas-Powered Racing Tether Car, 1948 - Tether cars, gas-powered model race cars, were popular in the 1930s and 1940s. They were raced individually while tethered to a central pivot, or against each other on a scaled-down board track. This model was produced by Supersonic Engineering Company of San Francisco, California.

- 1948
- Collections - Artifact
Supersonic "Super Spur" Gas-Powered Racing Tether Car, 1948
Tether cars, gas-powered model race cars, were popular in the 1930s and 1940s. They were raced individually while tethered to a central pivot, or against each other on a scaled-down board track. This model was produced by Supersonic Engineering Company of San Francisco, California.
- Supersonic "Fat Car" Gas-Powered Racing Tether Car, circa 1938 - Tether cars, gas-powered model race cars, were popular in the 1930s and 1940s. They were raced individually while tethered to a central pivot, or against each other on a scaled-down board track. This model was produced by Supersonic Engineering Company of San Francisco, California.

- circa 1938
- Collections - Artifact
Supersonic "Fat Car" Gas-Powered Racing Tether Car, circa 1938
Tether cars, gas-powered model race cars, were popular in the 1930s and 1940s. They were raced individually while tethered to a central pivot, or against each other on a scaled-down board track. This model was produced by Supersonic Engineering Company of San Francisco, California.