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Steve Griffin | The Salt Lake Tribune Mark Carson, left, and his son Bryce Carson, center, at Speedway Emissions & Inspec Steve Griffin | The Salt Lake Tribune Mark Carson holds up his original Vehicle Inspection Station certificate from 1988 at S Steve Griffin | The Salt Lake Tribune Bryce Carson performs a safety inspection a car at Speedway Emissions & Inspection Steve Griffin | The Salt Lake Tribune Bryce Carson performs a safety inspection a car at Speedway Emissions & Inspection