In the early 1960's, Porsche commercially manufactured farm tractors.
24
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Castor oil is used as a lubricant in jet planes.
-5
The first alarm clock could only ring at 4 a.m.
120
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41