2001 kia sportage just died on hiway, any suggestions on what might be wrong?

Could have been the timing belt broke

3 THINGS WILL CAUSE CAR TO SHUT OFF ON HIGH WAY.LIKE ALTERNATOR - FUEL PUMP - SPARK IGNITION COIL OR MODULE.FIRST OF ALL IF YOU HAVE DASH LIGHTS AND HEAD LIGHTS.ALTERNATOR OKAY YOU GETTING POWER.LISTEN FOR FUEL PUMP TURN ON IGNITION SWITCH ENGINE OFF LISTEN TO HEAR FUEL PUMP RUNNING IN GAS TANK.IF YOU HEAR NO PUMP RUNNING IN GAS TANK.CHECK FUEL PUMP FUSE AND RELAY.BOTH CHECKED OUT GOOD MORE LIKELY FUEL PUMP AT FAULT.IF FUEL PUMP RUNNING CHECK FOR SPARK AT PLUGS.IF NO SPARK.CHECK IGNITION FUSE.IF FUSE GOOD YOU COULD HAVE PROBLEMS IN THE PCM SINCE IT CONTROLS SPARK IGNITION SYSTEM.