| The only wood used by famed London cabinet maker Thomas Chippendale was mahogany. |
| Abraham Lincoln, who invented a hydraulic device for lifting ships over shoals, was the only US president ever granted a patent. |
| Chances that a road is unpaved: in the U.S.A. = 1%; in Canada = .75% |
| There are no natural lakes in the state of Ohio, each one is man-made. |
| For each second of operation during lift-off the space shuttle's engines consume enough fuel to power two million cars. |
| The term Radar is derived from the phrase "Radio Acquired Detection And Ranging." |
| On average a human being spends two weeks of their entire lives waiting for traffic lights to change. |
| Mercedes Benz cars are named after Mercedes Jellinek, the daughter of Emil Jellinek, the Austrian businessman who founded the company. |
| Because of heavy traffic congestion, Julius Caesar banned all wheeled vehicles from Rome during daylight hours. |
| There are 412 doors in the White House. |