My subaru has a mid wing. its super handy to set beers on when I'm working in the garage.
also useful to pull snowboarders to the front of the lodge.
I'm sure its supposed to have some far fetched use as a visual improvement but it mostly seems useful for a shelf/handle.
'03 VW Jetta TDI - The Daily Commuter
'02 Chevy Corvette Z06 - The Toy
'99 Triumph Daytona - Death Machine