Gesture Control for Automotive Peripherals
j-rock nowhere writes "An article in Automotive Design and productions' Field Guide to Automotive Technology describes a possible future method of controlling things like your cell phone and stereo while keeping your eyes on the road."
RTFA
the system has a camera positioned in the center console area pointed up at the roof so that the space in which the driver makes command gestures is essentially the same as where a gearshift lever might be. The thinking is to keep the operation of the system as familiar and natural as possible so that the driver won't be distracted from watching the road. (Another benefit is that since the gestures are made at a low level in the center of the vehicle other drivers are not likely to see them and interpret them as digital expletives.)
I have often regretted my speech, never my silence.
-Xenocrates