In comparing the book to the movie we watched in class, I also noticed a lot of the same differences that many of you did. Some additional differences that I noticed begin with Papa reading books in the shelter and a bag of keepsakes (boy's) shown in the movie. The movie added Papa smoking a few times and the boy asking to drink some whiskey. Also, the movie does not include Papa making "bullets" for his revolver. In the book, I don't think they heard the dog while they were in the shelter and I also understood the cart was always a shopping cart not a lawn cart. I could have misunderstood that. In the book, the description surrounding the place Papa died (interstates/buildings as slumping heat damaged structures and melted windows) was completely omitted in the movie making it appear as though Papa died in a field.
By the way, I didn't create a "Mishna" for The Road but I sure have enjoyed reading those posted.