Original sentence: During the 1920s and 1930s General Motors bought out the bus company Yellow Coach, helped create Greyhound bus lines, replaced intercity train transport with buses, and established subsidiary companies to buy out streetcar companies and replace the rail-based services with buses.GM formed United Cities Motor Transit, in 1932.See General Motors streetcar conspiracy for additional details
Edited sentence: Among their great successes, United Cities Motor Transit managed to dismantle New York City's extensive trolley network in only 18 months (this was also a fault of Mayor Fiorello La Guardia, who wanted to be popular and seem progressive, not standing in the way of private transport).During the 1920s and 1930s General Motors bought out the bus company Yellow Coach, helped create Greyhound bus lines, replaced intercity train transport with buses, and established subsidiary companies to buy out tram (streetcar) companies and replace the trams with buses.GM formed United Cities Motor Transit, in 1932, in a covert attempt to ruin public transit systems and install a demand for more of their products (automobiles and buses and train engines).GM, then, grouped with Standard Oil and Firestone, forming National City Lines (NCL).NCL destroyed the transit systems of more than 45 cities, in the USA, creating a great level of dependency on all their services (vehicles, fuel and tires) that remains, to this day.The insignificance of their retribution is appalling, when the results of their selfish actions have affected the whole world in an, almost, entirely negative fashion: utter dependency on automobiles or, at least, the impression of it and all that entails (in terms of environmental disaster and social division and massive, irreversible urban miscalculations).Their very irresponsibile and highly illegal conspiracy was eventually awarded with only a $5,000 fine, for each company, and a symbolic $1 fine, for their treasurers