I've been observing these types of line, for a while. Their are a number of vehicles which also use a number of parallel shapes, which remind me a lot of a piece of wood molding, mounted along the top of the car, down it's length. These are typically minivans, vans and vehicles of that sort. I have started to wonder if those don't have some aero benefits, as well as thin roof strengtheners. If anyone knows for sure, I would be interested.
I have a 89 Honda wagon, which does not have these stiffeners and I do have some need of something to keep it from popping, anyway.
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