Behind the front lines, Germany was still a poor country. Their civilian infrastructure included wood-burning vehicles. Not even coal, wood. These were pre-war production that were still in use by the end of the war.
In the 1930s, no industrial economy was still using such a sub-optimal fuel source.
Systematic extermination for evil funnies makes way less sense than millions dying of disease and starvation on account of destroyed supply lines.
Behind the front lines, Germany was still a poor country. Their civilian infrastructure included wood-burning vehicles. Not even coal, wood. These were pre-war production that were still in use by the end of the war.
In the 1930s, no industrial economy was still using such a sub-optimal fuel source.