Whale oil was used in automobile transmissions as late as 1973.
56
In the early 1960's, Porsche commercially manufactured farm tractors.
24
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Kleenex tissues were originally used as filters in gas masks.
46
The first alarm clock could only ring at 4 a.m.
120
Originally, BMW was an airplane engine manufacturer.
69

