I don't usually drive on Saturday, but this isn't uncommon for my neighbors:
Child 1 to hockey very early am. Run home to take child 2 to soccer early am
Come home after both. Load up and go grocery shopping, return home and unpack.
Load up to go to birthday party, park, tailgate at university, batting practice etc.
come home, load up to go out to dinner or a movie.
With kids there seem to be a lot more errands than without them.