FILE - In this Jan. 29, 2011 file photo, flames shoot out of the exhaust of the Dempsey Racing Mazda RX-8 heading into the West Horseshoe turn during the Grand Am Rolex 24 Hours auto race at Daytona International Speedway in Daytona Beach, Fla. Mazda will stop producing the vehicles with its signature rotary engines in June 2012 because of poor sales and the costs of meeting emissions standards, the Japanese automaker said Friday, Oct. 7, 2011. (AP Photo/David Graham)