Whale oil was used in automobile transmissions as late as 1973.
56
Mico headphones read your brainwaves and select music based on your state of mind.
7
A toaster uses almost half as much energy as a full-sized oven.
33
Kleenex tissues were originally used as filters in gas masks.
46
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4