This is incredible. I know these things happen out there, but this just scares the crap out of me.
For those that don't know, the Coronado Bay Bridge is a very tall bridge connecting San Diego with Coronado "island". It's a few hundred feet high and pretty long (maybe half a mile?), with concrete barriers in the middle and on the sides, and usually a lot of traffic (especially at 5PM). So the normal techniques of just plain avoiding bad drivers are a lot harder to execute (but of course not impossible) in a situation like this where you're quite restricted in where you can go to get away.
I live about 5 minutes away from there, so this is right in my backyard. Scary.