Zippo's new '4-in-1 Woodsman™' looks pretty awesome and would be great in the back of our 4Runner. Zippo says:
The 4-in-1 Woodsman™ converts to an axe and bow saw to help cut your way through a jungle of brush and tough limbs fast. A mallet and stake puller helps you set up a pop-up blind and take it down with ease. Carry this product to your campsite and have a mallet, a stake puller, a 15" bow saw that cuts oak up to 4” in diameter, and a hatchet with a 5” blade. Call it a handy camping tool or a survival tool, no tool gives you more capability for the weight or the money.