An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The Google driverless car has only encountered two accidents. The first it was rear ended at a stop sign, and the second was when a human was behind the wheel.
7
In the early 1960's, Porsche commercially manufactured farm tractors.
24
Originally, Nintendo was a playing card manufacturer.
70
A small airplane can fly backwards.
75
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
