In cab tank
I hit a guy that ran a stop sign on a country road with a new 1969 Chevy pickup in 1969. My truck rolled on the side, then twice end over end. (I was an electric company lineman at the time and the previous week I had gone out on a trouble call where a guy in a frozen food truck had cleaned off one of our poles and then hit an oak tree. He was pinned in the truck (with a tank behind the seat) probably had broken ribs at worst. Our primary (8320 volts) arced to the truck and ignited the tank. When I got there they were just getting the fire out and the driver was dead.) When I came to, my truck was upside down with the passenger side window burried in the dirt and the rest of the windows smashed down towards the dash with too small an opening to climb out. I had just filled the tank behind the seat with 18 galloms of gas. The floor mats were burning and the melted burning parts were whistling down on me. I tried to remain calm, the drivers door was out of the dirt but very smashed up. (the frozen food truck went through my head) I lifted the door handle and kicked, and kicked, and kicked, and kicked, and completely lost it. A guy came along that was a Captain in a volunteer fire company, he had 5 five pound extinguishers and got the fire under control. He had to leave to get a fire truck which took about 15 minutes but seemed much longer. He and another guy put the fire out completely and the 2 of them rolled the truck upright, a feat in itself. They pried open the windshield and took me out. The Captain held me and talked to me while waiting for the ambulance because he told me later he thought I was going to die. He said he didn't know why the gas had not ignited, because it had all drained out on the ground. Call me paranoid, but I hate gas tanks in the cab. I realize that the same thing can happen with the frame mounted tank, but it's not right there beside you.