My 2019 Lincoln Navigator was parked sitting for 2 hours before a fire under the belly of the vehicle became a blaze. Neighbors had to use a fire extinguisher to get the fire out. I was at work (Ford Motor Company) while my wife and kids just made it home and was out of the vehicle. Jack Demmer Lincoln service the vehicle due to it shutting down completely with no warnings. (The vehicle would shut completely down WHILE DRIVING for 5 to 8 seconds every time it goes over ANY BUMB OR UNEVEN SURFACE OR PATCHE in the road. It would come back on in neutral mode. I have to put it back in drive mode ALL WHILE THE CAR IS MOVING AT ANY SPEED IT WILL DO THIS.) They return the vehicle back to me as if everything was fixed. 4 weeks later it's a blaze of fire under the body.