Crush the gas tank by ramming it, or just crash the car really, really hard. The Sunburst and 200BX seem to be the most flammable right now.
Just get the RS Sunburst or the rally, It literlly catches on fire in 5 mins, even without driving it. e.e
I don't see it anywhere??? How do I access it? EDIT: Typed in "fire.igniteCar()", it didn't do anything.
After loading a level, press "~" and in the bottom left corner, click on the T3D thing and it should present several options to you. Now select "Vehicle Lua" and in the text field type "fire.igniteCar()". That only works with vehicles that can catch fire so try with the official ones.
I cannot seem to do this now, my thing is switched to Vehicle Lua, I'm copying and pasting that code, and nothing is working