So do you think any of this is a lie?
Traffic Signal
Invented by Garrett A. Morgan in 1923? No!
The first known traffic signal appeared in London in 1868 near the Houses of Parliament. Designed by JP Knight, it featured two semaphore arms and two gas lamps. The earliest electric traffic lights include Lester Wire's two-color version set up in Salt Lake City circa 1912, James Hoge's system (US patent #1,251,666) installed in Cleveland by the American Traffic Signal Company in 1914, and William Potts' 4-way red-yellow-green lights introduced in Detroit beginning in 1920. New York City traffic towers began flashing three-color signals also in 1920.
Garrett Morgan's cross-shaped, crank-operated semaphore was not among the first half-hundred patented traffic signals, nor was it "automatic" as is sometimes claimed, nor did it play any part in the evolution of the modern traffic light. For details see Inventing History: Garrett Morgan and the Traffic Signal.
Gas Mask
Garrett Morgan in 1914? No!
The invention of the gas mask predates Morgan's breathing device by several decades. Early versions were constructed by the Scottish chemist John Stenhouse in 1854 and the physicist John Tyndall in the 1870s, among many other inventors prior to World War I. See The Invention of the Gas Mask.
Automatic Lubricator, "Real McCoy"
Elijah McCoy revolutionized industry in 1872 by inventing the first device to automatically oil machinery? No! The phrase "Real McCoy" arose to distinguish Elijah's inventions from cheap imitations? No!
The oil cup, which automatically delivers a steady trickle of lubricant to machine parts while the machine is running, predates McCoy's career; a description of one appears in the May 6, 1848 issue of Scientific American. The automatic "displacement lubricator" for steam engines was developed in 1860 by John Ramsbottom of England, and notably improved in 1862 by James Roscoe of the same country. The "hydrostatic" lubricator originated no later than 1871.
Variants of the phrase Real McCoy appear in Scottish literature dating back to at least 1856 — well before Elijah McCoy could have been involved.