OWNER TRIED TO START ENGINE AFTER VEHICLE SITTING UNUSED FOR ONE WEEK. ENGINE WOULD NOT START, SO OWNER JUMP-STARTED IT AND LET IT RUN APPROXIMATELY 5 MINUTES. OWNER THEN DROVE VEHICLE APPROXIMATELY 8 MINUTES AND NOTICED SMOKE COMING FROM THE CENTER CONSOLE AND THE RIGHT FRONT OF THE VEHICLE. PULLED OVER AND CALLED THE FIRE DEPARTMENT. EXHAUST SYSTEM WAS OVERHEATED AND SHOWED BLUE HEAT DISCOLORATION. PLASTICS AND CARPET ON CENTER FLOOR OF PASSENGER COMPARTMENT WERE BURNED.