Nonono! These diner's are made in the older US-style, like they had in the 50ies or at the legendary "Route 66".
The owners want to be seperate from fast-food-chains like McDonalds, BurgerKing, KFC and so on.

These diner's want to offer freshly made food, not machine-made stuff like the Mc's.
O.k., the main food today is machine-made, so this ambiente is often just an illusion - but even for that illusion the people are going there.