The ball on top of a flagpole is called a 'truck'.
24
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
Any modern jet is capable of breaking the sound barrier.
34
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17
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
A small airplane can fly backwards.
75