This logic classifies nearly every product of human effort as inherently unjust. It basically demands a world of perfect abundance where every desire is instantly available to either everyone - or no one - while completely ignoring the reality of time and limited resources.

Right, or in other words “physical reality is full of natural and insurmountable inequalities.” But cars are a human invention, which makes them a mechanism of inequality - that’s to say, something where went out of our way to “do work” to de-flatten the playing field. The cars are introducing a new inequality to human society.

And cars are also less efficient (in terms of space and material and fuel usage) than other modes of transport - trains, buses, bikes and walking. So of course, to someone who cannot afford cars, they will wonder if car dependent infrastructure was created and is maintained primarily to seperate those who can pay and those sho must stay (stay put). The expectation that everyone will have a car might mean that the transportless fellow has no access to pubic transport, because his local government decided they shouldn’t fund any. This is bad for the safety of children and the disabled, as well as the poor’s access to work.