BMW steering wheel offers a race timer, g-force meter for every turn

German luxury automakers have slowly been turning their vehicles into computers on wheels over the past few years, putting a plethora of buttons and screens never more than a few inches away from a driver or passenger. Yet there's still unexplored frontiers, as BMW has revealed with a steering wheel that keeps track of your fuel efficiency, lap times and even tells drivers when to shift. It's like having a mini race engineer sitting on the rim -- although his services don't come cheap.