The 2015 U.S. Tech Choice Study looked at 59 advanced vehicle features across six categories including entertainment and connectivity; comfort and convenience; collision protection; driving assistance; navigation; and energy efficiency. The study found the five most preferred technologies were blind-spot detection and prevention, night vision, enhanced collision mitigation system, camera rearview mirror, which allows drivers to switch between a mirror and camera image, and self-healing paint that has fewer scratches than conventional paint. The least-preferred technologies included a health and wellness system, hand gesture controlled cockpit, hand gesture controlled seat, biometric driver sensors and touch screens.