FWIW Toyota had a drunkenness-sensing steering wheel at least in concept for ~10 years ago: http://www.autoblog.com/2007/01/03/toyotas-sweat-sensing-steering-wh

FWIW Toyota had a drunkenness-sensing steering wheel at least in concept for ~10 years ago: http://www.autoblog.com/2007/01/03/toyotas-sweat-sensing-steering-wheel-will-thwart-drunk-drivers/ http://www.autoblog.com/2007/01/03/toyotas-sweat-sensing-ste...