This is the thick, black smoke you get when several buses are burning at the bus garage. The cause of the fire has yet to be established, but it reportedly involved both electric hybrid vehicles and diesel powered buses. Unsurprisingly with such a fierce fire, the street was closed to traffic, multiple fire engines attended and nearby buildings were evacuated. Fortunately, it seems that no-one was hurt.
In the extra you can see the burnt out metal shell of one of the buses behind the firemen and, to its left, another badly damaged bus. I hear that about 6 buses were involved.
That's enough excitement for one day.