THE RAM VEHICLE CAUGHT ON FIRE DRIVING DOWN THE ROAD. IT BURNED FAST I AM NOT AWARE OF THE CAUSE. I MADE A COMPLAINT TO FIAT WHEN THE FD INFORMED ME THIS WAS THE FIFTH ONE HE HAS PUT OUT IN TWO WEEK TIME FRAME. THEY AND MY INSURANCE COMPANY HAD FIRE INVESTIGATORS COME OUT RULED INCONCLUSIVE. I HAVE SEEN MANY RAM TRUCKS CATCH ON FIRE SINCE THEN. THE TRUCK WAS ON A TWO WAY HWY BACK ROADS IN MOTION WHEN SMOKE WAS NOTICED AND THEN JUST ENGULFED IN FLAMES.