http://www.gizmag.com Although the environmental benefits of hybrid vehicles are well known, their near silent operation when running off batteries does pose a danger to pedestrians who are used to the rumble of an engine to alert them to oncoming vehicles. Active Noise Control technologies from Lotus Engineering address this problem by projecting engine sounds externally to improve pedestrian safety, while also employing noise-canceling technology internally to reduce unwanted cabin noise.en gizmag.com http://www.gizmag.com/lotus-active-noise-control/11486/#comment-2017 http://www.gizmag.com/lotus-active-noise-control/11486/#comment-2017 Mon, 20 Apr 2009 12:34:04 -0500 http://www.gizmag.com/lotus-active-noise-control/11486/#comment-2002 http://www.gizmag.com/lotus-active-noise-control/11486/#comment-2002 Sun, 19 Apr 2009 21:03:36 -0500