A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
Originally, BMW was an airplane engine manufacturer.
69
The first alarm clock could only ring at 4 a.m.
120
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
A toaster uses almost half as much energy as a full-sized oven.
33