Even in resource-rich USA there was rationing of basic commodities. Additionally, virtually no new automobiles for personal use were produced, all factories having been converted for war production. Being one of the few resources not directly available here, rubber was in very short supply and new tires could not be obtained. I imagne retreads were popular, if one could get fuel.
My grandmother related that shoe rationing was also a great hardship on families with young children. I don't know the exact figure, but young, growing children often had to wear too small shoes or hand-me-downs with holes in them (material to repair said holes bieing in short supply). She also related that sugar was strictly rationed. Nylon stockings were non-existent.
Coffee was also rationed, and I recall my grandparents complaining about that. My father, who was in the US Army Air Corps from 1942-1946 said coffee was readily available for GI's, but that it was generally awful.
Despite all this, people here in the US made out quite well compared to civilian populations in European and Asian comabatants and POW's, many if not most of whom were on subsistence rations or less by the end of the war.