Via Drudge, from CNBC:
From BMW’s perspective, the new 7 Series sedan will take luxury and technology to a whole new level—one that includes gesture controls so drivers can adjust the radio and other in-car systems with a wave of their hand.
I’ve heard about this design before. Douglas Adams wrote about the idea in Hitchhiker’s Guide to the Galaxy:
A loud clatter of gunk music flooded through the Heart of Gold cabin as Zaphod searched the sub-etha radio wave bands for news of himself. The machine was rather difficult to operate. For years radios had been operated by means of pressing buttons and turning dials; then as the technology became more sophisticated the controls were made touch-sensitive–you merely had to brush the panels with your fingers; now all you had to do was wave your hand in the general direction of the components and hope. It saved a lot of muscular expenditure, of course, but meant that you had to sit infuriatingly still if you wanted to keep listening to the same program.
Zaphod waved a hand and the channel switched again.