(NORWAY, MI.)–For many years, Doug Rose entertained crowds at racetracks with the “Green Mamba” jet car. Several times in the past the jet car malfunctioned and Rose was injured, and at one point lost both legs. Friday night, at the Norway Speedway, the Green Mamba was out of control when it crashed off the track during the exhibition. It is believed he may have suffered a minor heart attack prior to crash and possibly the purpose the Jet Car was traveling at a rate of speed too fast turn on the corner of the track. The incident claimed the life of Doug Rose of Ring Town, Pennsylvania. He was pronounced dead at the scene. The races were canceled for the night and will be held on Saturday at the Speedway. Michigan State Police from the Iron Mountain Post were assisted by Norway International Speedway personnel, Norway Fire Department firefighters and Beacon Ambulance Service.