Any modern jet is capable of breaking the sound barrier.
34
Originally, Nintendo was a playing card manufacturer.
70
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
A small airplane can fly backwards.
75
The IRS processes more than 2 billion pieces of paper each year.
28
Whale oil was used in automobile transmissions as late as 1973.
56
