Asphalt can catch fire at about 900 degrees Fahrenheit, boils at around 600 .
Look at the cars with melted alloy wheels, engines melted, windshields melted, burned out completely, besides the asphalt directly in contact with the car and melted parts, the asphalt is untouched.
I was 3rd in line behind a box truck that caught fire and blocked an interstate for miles. I watched up close for 2+ hours as the truck and its contents burned to the ground and melted the asphalt. The road was closed for several days to be repaved and I found an alternate route to work. The asphalt caught fire until the fire company was able to put it out. Nice try. Asphalt is made with petroleum products.