Calvin and Hobbes by Bill Watterson for September 07, 1987
Calvin: Let's have a look around I'm sure we'll run into a robot or something. Hobbes: Look at this. Calvin: Gosh, I wonder what futuristic device this is! Some sort of transportation pod, I'd guess. Hobbes: I wonder how you get in? Calvin: I don't see a door or license number anywhere. Calvin: This is very peculiar. Hobbes: Have you ever seen a tree this color?