Inventor Al Simpkins develops a new airplane fuel, "Economo," which he claims gets a thousand miles to the pint.
Al Wilson
Al Simpkins
Helen Foster
Stella Hearns
Wilbur McGaugh
Silas Smythe
Gilbert Holmes
Bert Beatle
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January 13, 1929
57m
8.0
Bruce Mitchell
Carl Krusada
1
Universal Pictures
US
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