Whale oil was used in automobile transmissions as late as 1973.
56
There are only 14 blimps in the world.
69
Super Nintendo and Sega Genesis had an online multiplayer mode.
-2
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
The average car produces a pound of pollution every 25 miles!
18
The first alarm clock could only ring at 4 a.m.
120