I also had a part of the dream that seemed like a flashback, to the beginning of the outbreak, where I and a family I don't recognize (but my family, according to the dream-logic) were in a bad road accident with a truck driver who had just gone through the zombie transformation. I "flashed back" to this more than once, as if it were supposed to explain everything. Yes, my dreams can be very cinematic. And then I'd be back in the ship, knowing that the world was ending but doing a job in the meantime. I think everyone was trying to remember the world as it was, and the people in it, before the outbreak had changed everything.
Another oddness: I strongly got the feeling, both late in the dreaming and upon waking up, that I'd dreamed this dream at least once before...but now I'm sure I never have. I'm feeling that now just as strongly as I believed in the dream's recurrance while I was dreaming it.
I might need some time to shake loose of this dream.