Nissan has launched a new concept car designed to reduce drunk driving. Some of their innovative features to prevent driving under the influence include alcohol odor sensors in the transmission shift knob and both front seats as well as a facial monitoring system.
"A camera is mounted on the instrument cluster facing the driver to monitor the driver's face. The system is calibrated to monitor the driver's state of consciousness through their eyes. When the system detects signs of drowsiness, a voice and message alert is triggered via the navigation system. Additionally, a seat-belt mechanism is activated, which tightens around the driver to gain his or her immediate attention."