Louvers are cool-literally. They were invented to let hot air out of the engine compartments of race cars and other things that needed ventilation. Then hot rodders at the dry lakes found they were ...

In the '50s and early '60s louvers were the rage, but by the mid '60s they were almost forgotten. The popularity of the late '60s musclecars was responsible for the decline; it wasn't fashionable to ...