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.
Roads outside of the Emirate's larger cities have historically had speed limits of 75 mph, but law enforcement officers didn't ticket drivers operating under 87 mph, which is pretty darn quick. That may change as development creates more obstacles. The average speed of cars traveling through Arizona's Seguaro National Park on Rt. 79 is roughly 88 mph, though speed frequently top 90 mph, making this one of America's fastest and driest roads.