The 2014 Chevy Stingray in SEMA, biggest aftermarket trade show, had a rear wing concept that probably had less to do with additional downforce but to extend and have a cleaner rear flow. Ecomodders have suggested and sketched out these kinds of extensions/rear wings. Maybe aftermarket wing makers could finally produce this type of aero-wing for a larger selection of cars.
Chevrolet Corvette Gran Turismo 6 Concept: Live From SEMA