Introduction & History of the Bill of Rights. The original Constitution, as proposed in 1787 in Philadelphia and as ratified by the states, contained very few individual rights guarantees, as the framers were primarily focused on establishing the machinery for an effective federal government.
There are 60 seconds in a minute and 60 minutes in an hour; 60 * 60 = 3,600 seconds in an hour. 3,600 / 45 seconds = 80. And to cross-check: 80 mph * 5,280 feet in a mile = 422,400 feet per hour / 60 = 7,040 feet per minute / 60 = 117 1/3 feet per second * 45 seconds = 5,280 feet in 45 seconds.
These can be found, to name a few: in Poland, where highway speeds get up to 140km/h; in Texas, US, where a 41-mile toll road between the cities of Austin and San Antonio recently became the fastest in the US at 85mph; and in Bulgaria, where a law was passed in 2012 to increase the maximum speed on highways to 140km/h.