UPON EXITING VEHICLE AFTER SHORT TRIP (2 MILES), NOTICED STRONG FUEL ODOR. LOOKED UNDER TRUCK AND OBSERVED FUEL STREAMING DOWN OVER HOT EXHAUST PIPE BENEATH ENGINE COMPARTMENT. INSPECTION OF ENGINE REVEALED BURST LINE CONNECTING FUEL RAILS, CAUSING FUEL TO SPRAY OVER HOT ENGINE/EXHAUST, EXTREME FIRE HAZARD. CANNOT BE DRIVEN DUE TO FIRE HAZARD. LINE IS NOT RUBBING ON ANYTHING OR FLEXING TO CAUSE FAILURE. *TR