I liked this chapter...especially Pam's walk back to the house.  To me, it makes sense that she couldn't move the car...and it ties in with your last chapter about Pam not really being ready to let go. 

And Michael...as socially inept as he is, I picture him being different in a situation like this.  Much like he was at the end of Business School with Pam, or Booze Cruise with Jim.  I imagine his compassion coming out, and that he'll be an unlikely source of strength for Pam (of course I could really be wrong, and you might just play him for comic relief, which would be ok too).  :)

Either way, I look forward to the end of the story.  You've done a great job, and I'm excited for more!