A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
The electric chair was invented by a dentist!
122
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46