I was driving on hwy when I had to do a hard stop because traffic stopped suddenly in front of my vehicle, no physical contact was made to any cars in front or back of me, suddenly dark smoke started coming from under the hood of car, The car started stalling in middle of the hwy I got out safely opened hood and seen engine area was on fire another person in a vehicle pulled over came out with a fire extinguisher and sprayed to put fire out. there were no prior symptoms or warnings prior to this problem occuring.The car was picked up by my insurance company and taken to a Honda dealer and that is where car is located as they are trying to repair fire damages and no one knows why this fire ocurred.