I was pointing out that you were looking at two separate occurrences that were not as related to one another as Marx and other communists hypothesized. The car and its byproducts are the main culprit of community atomization, with capitalism being to blame the same way that art school is to blame for WWII, the church is to "blame" for the end of the European clan based family separate from the atomization of communities writ large, and it did so for actually pretty legitimate reasons that Marxists tend to not consider when lamenting about how industrialization destroyed the "traditional" family.

Also, maybe Marx himself wasn't selling cars but the eastern bloc had its own auto-industry and its own period of carification, the difference was that the post war housing rush pushed the Soviet bloc towards housing infrastructure that naturally led people to using cars less often than their western counterparts, those "commieblocks" that catch flack for not having as nice a facade as similar units built with less haste.