1998 Dodge Ram 1500 fuel system problems

My son, william, was driving our 1998 dodge pickup on highway 78 when it began to lunge. Since we had to put 2 transmissions in his previous dodge pickup, he thought something was wrong with this transmission. He started to pull off the road and looked in his rearview mirror for traffic when he saw flames and smoke coming from between the cab and bed. He hurriedly pulled off the road and when he opened the drivers door flames englufed the cab. He had to go out through the fire.

Drove my 1998 dodge ram 1500 to empty my trash, started back home and had driven less than 1/4 mile when the truck hesitated like it was going to stall out and there was some smoke beginning to come up through dash area on drivers side. Thinking I might have a busted radiator hose I immediately pulled over in the yard of person doing repair work on an old building. When I opened my truck door on drivers side flames shot between the inside of the door and seat. I jumped out of the truck but was not injured.