There are a few basic premises for films that are simply pure, and two of them are the road trip movie and the boy and his dog movie. You can find countless examples of each, and I am sure they have been mashed up before as well. That’s the case again in Finch, a road trip story starring Tom Hanks and an adorable dog, but that also happens to be set after the end of the world and co-starring your latest favourite movie robot of the year.