Living up here in NorCal and driving in SF all the time, this makes me so jealous. I so want to do those drifts.
They did the shoot over several days and closed down different roads at different times. They were able to do the bay bridge filming when they closed the bridge for the whole weekend for labor day. They do it every year now while they build the new span.
Look closely at the barrels and you'll see the tire marks from where they do several takes till they get the one they want. It's still quite a feat of driving and highly entertaining. I love watching the gymkhanas.