A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
If a car is travelling at 55 miles per hour it will travel 56 feet before the driver can shift his foot from the accelerator to the brake.
25
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Originally, BMW was an airplane engine manufacturer.
69
The cigarette lighter was invented before the match.
210
A small airplane can fly backwards.
75
The United States produces enough plastic film annually to cover the entire state of Texas.
13

