Not stashed in the car as such, simply because we traded in the van for a Camry and there's not much room when you jam in five people!

But there's a reason I carry a nice big bag--even a HC Harry Potter novel fits in it nicely! Along with a small hardcover journal, with shopping lists, books I want to read (so I don't get in a bookstore and become paralyzed for choice) and blank paper for sketching costuming ideas.