Shot of a lifetime, and me without my camera!

I'm driving up the onramp at Grand Avenue, after a long and circuitous attempt to find the freeway entrance.

It looks like there's a building on fire on the right just before the freeway.

I drive to the top, looking over to see what's aflame.

SEMI TRUCK ablaze. I have a red light. Totally unimpeded view. No one is in front of me at the light. No one in the lane to my right. At the head of the line of traffic coming from the right, as if about to cross my path, there's a semi with its engine on fire. Flames are shooting out of the front. Heavy black smoke. I roll up my window. The wind is blowing away from me. There are a few pedestrians watching from a distance. Doesn't look to me like a safe distance. I am wondering what to do, whether it's safe to be stopped at the light with a truck possibly about to blow up fifteen yards away. Not my usual onramp, I don't know where I'll end up if I go left. Right is totally wrong, plus it takes me closer to the truck. I sit there and stare. It's a long light. Boom! The fuel tank explodes. I jump, and thank the stars that nothing reached me. The billows of smoke triple in size and the first forty feet or more of it fills with crimson flames. The steel of the engine compartment is visibly melting away. My light turns green. I drive away, parallel to the cloud of smoke. I don't even smell anything. Then I'm gone.