Dr. Guentzler has over 25 years experience as an expert witness and forensic examiner and 36 years as a University Professor. He is licesened in the State of Arizona as a Private Investigator. His expertise includes Auto, Truck, ATC, ATV, Motorcycle and Motor Home accidents and product failures. He also specializes in braking systems, ignition, fuel system, cooling, electrical and battery explosions, as well as vehicle fire cause and origin.