america used to develop for density. Go read the book "Strong towns" to understand how. Technological development alone doesn't explain the car-centric development. There was active lobbying and dismantling of alternative methods of construction and zoning just to support automobiles.
Americans have been brainwashed into accepting there is no solution to a problem that was introduced by car makers in the 1960s. American cities were dense and had lots of alternate modes of transit before all of it was ripped out under the guise of technological "development" and "freedom"
Information available at a disused lavatory at the end of a long corridor with a sing that warns "beware of the leapord"