Many of the cars in the film have a "B" sticker on the windshields. This is a reflection of the wartime rationing of gasoline. Gas was rationed primarily to save rubber, because Japan had occupied Indochina, Malaysia, and Indonesia. (There was a shortage of gas on the East Coast until a pipeline from Texas was constructed to replace the transport of crude oil by sea.) The B sticker was the second lowest category, entitling the holder to only 8 gallons of gas a week.
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