BMW's HoloActive Touch.

BMW has announced the first details of HoloActive Touch, a concept dash interface that uses gesture commands and floats a virtual touchscreen next to your steering wheel. The HoloActive touch uses a free-floating “virtual touchscreen” that “confirms the commands with what the driver perceives as tactile feedback. BMW distinguishes HoloActive Touch from existing HUDs by using reflections to create the illusion of a display floating in space rather than on the windshield. There's also a camera that can detect when the driver's fingertips are interacting with a virtual control surface.

Source; www.theverge.com