And most auto factories can’t operate normally during a war anyway. Many of the workers will be fighting on the front, international supply chains are disrupted, many consumers won’t be able to afford new cars, many markets will be closed off because they’re on opposing sides in the war.
Yeah, you’re not using military contractors to make vehicles from from scratch. Especially things like engine, transmission, etc.
That would add years of development and testing. Compared to slapping some turbos on a beefed up engine from an experienced manufacturer.
And most auto factories can’t operate normally during a war anyway. Many of the workers will be fighting on the front, international supply chains are disrupted, many consumers won’t be able to afford new cars, many markets will be closed off because they’re on opposing sides in the war.