Alfred P Sloan was certainly a very bad man but he hardly acted alone.
I can rattle off a whole bunch of names complicit in the conspiracy:
William Levitt
His idea of utopia was a planned community of 50,000 with no public transportation and all houses accessible only through cars. By all accounts he was an egocentric madman.
Robert Moses
The master builder of New York from 1930 to 1965 who had an obsession with 8 lane freeways. Best known for dynamiting inner city neighborhoods and forcing people into the suburbs.
Dwight D Eisenhower
Champion of recreating Hitler's autobahn in the United States for a staggering cost of $114 billion dollars or ($425 billion in today's money). Total cost after 50 years of maintenance and expansion amounts to over $1 trillion in government road subsidies to suburbia.
Harry .S Truman
Best know for the housing act of 1949 which included the mortgage tax deduction designed to get people into single family homes in the burbs. Total cost in the untold tens of trillions. Father of the ownership society and a way of life we hold to be un-negotiable.