A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
In the early 1960's, Porsche commercially manufactured farm tractors.
24
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Castor oil is used as a lubricant in jet planes.
-5
Originally, Nintendo was a playing card manufacturer.
70
The cigarette lighter was invented before the match.
210