A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The cigarette lighter was invented before the match.
210
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
Castor oil is used as a lubricant in jet planes.
-5
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
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308