They refer to WWII and it needs to be noted that the industry--broader than just autos, had to retool, for war production. It was rapid. It was govt dictum and that self-same WWII engine that they cite did what it had to do. Now. The Carter years..the oil embargo- those cars were grossly inefficient. The threat was immediate and the extent and length of the oil crisis was unknown. I do not --after the fact--assign overblown blame on remedial action. It's was called a crisis because it was. wwII was a crisis..because it was..
The issue the the CAFE law, is the externalities of the rapid change were paid for by the auto industry, whereas in World War Two, it was paid for by the government