The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Whale oil was used in automobile transmissions as late as 1973.
56
It takes six months to build a Rolls Royce...and 13 hours to build a Toyota.
93
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The average car produces a pound of pollution every 25 miles!
18