It only took a handful of years once cars greatly proliferated in the 20s. Any adoption took longer then to proliferate than it does today, so I would be carefu

It only took a handful of years once cars greatly proliferated in the 20s. Any adoption took longer then to proliferate than it does today, so I would be careful extrapolating from either the pace of adoption in the 20s or the pace of adoption from the invention of the automobile to the beginning of accelerated adoption. You've probably seen this famous graph. https://hbr.org/resources/images/article_assets/2013/11/FELTON-CONSUMPTION-.png https://hbr.org/resources/images/article_assets/2013/11/FELT...