Getting better traction in Mud

Try to figure out a way to get better traction in a pinch, almost got my van stuck in the mud a few times last year ( gets pretty muddy in the spring ). Was thinking of taking a 2 x 12 and screwing down some furring strips on the top, then some 2x4s on the bottom and driving on them ( then periodically moving them). Any suggestions on a better, or inexpensive way to do this? I've seen people say boards and old carpet, but that seems really messy.