ERich10983 wrote:
I just heard on New Hampshire Public Radio that Rt 89 was closed down because a
tanker filled with liquid nitrogen had gone off the road. The road was closed
because of the danger of explosion!

Sigh.....

Actually quite real.
Nitrogen supercools tarmac.
Oxygen condenses on tarmac, soaks in.
Tarmac goes boom as it warms up, or a fly lands on it.