Sad how fast some of the newer rigs go to the ground. I took over 20 minutes for the fire to breach the firewall in my 95 Winnebago Vectra 33RQ. There was steel (no plastic) in the bins/basement with steel sheeting under the cab area and going up under the dash to the windshield. It burned for almost 30 minutes before the fire department arrived. You can see the pics in the photo section listed as PolyGlow after the fire. Most of the contents was salvageable. Some items in the front part of the basement melted or got scorched but nothing in the basement burned or got touched directly by flame. I doubt my newer 35U with all the plastic bins etc would fare as well.
2001 Winnebago Adventurer WFG35U