Without knowing what was going on, it was puzzling. Wouldn't my side of the freeway be shut down if an oil tanker was burning like that? Would they need to have closed the road for the helicopter to land? I recall thinking "That looked so Hollywood ... no one was panicked or upset." And I thought about it later as news clips played tonight, but no mention of what seemed to be a gruesome accident.
OK, I looked on SFGate, and sure enough! It was all special effects and they were filming for an upcoming TV show called Trauma. Woo-hoo! How cool!