Question: What is the liklihood of a car bursting into flame if it hits a tree? I don’t think it would burst into flame to burn the body beyond recognition - unless it was “helped” to burst into flame.
http://jalopnik.com/why-cars-explode-into-fireballs-and-why-they-usually-do-560552028
...That’s more than 5 vehicle fires caused by a collision every day. While most of those fires started in the engine and were less likely to be fatal, around 10% of the collisions that involved fire were because of a fire from the fuel tank or fuel line...