We find that the unweighted average time price of our 42 food items fell by 87 percent between 1919 and 2019. The total time price (i.e., the nominal price divided by the nominal hourly wage) of our basket of 42 food items fell from 27.26 hours of work in 1919 to 3.85 hours in 2019.

(http://www.autoadmit.com/thread.php?thread_id=5909588&forum_id=2#50170227)

The success of the company gave Benz the opportunity to indulge in his old passion of designing a horseless carriage. Based on his experience with, and fondness for, bicycles, he used similar technology when he created an automobile. It featured wire wheels (unlike carriages' wooden ones)[20] with a four-stroke engine of his own design between the rear wheels, with a very advanced coil ignition[21] and evaporative cooling rather than a radiator.[21] Power was transmitted by a belt to a counter-shaft with a differential, from each side of which a roller chain transmitted power to that side's rear wheel, which ran loose on the rear axle. The 1885 version was difficult to control, leading to a collision with a wall during a public demonstration.

Benz continued to work on his Motorwagen and on 29 January 1886 he submitted the patent application for an "automobile fueled by gas".[22] He first tested it on public roads in the early summer of 1886 and drove it publicly on the Ringstrasse in Mannheim on 3 July 1886. He received patent number 37345 in November 1886 (the date given for a patent is the application date) and the vehicle henceforth became known as "Benz Patent-Motorwagen".

The next year Benz created the Motorwagen Model 2, which had several modifications, and in 1889, the definitive Model 3 with wooden wheels was introduced, showing at the Paris Expo the same year.[21]

(http://www.autoadmit.com/thread.php?thread_id=5909588&forum_id=2#50170306)