Notice the fire extinguisher on the ground outside the rolled truck? Anything and everything inside the truck will start flying around when your four-by flips. A good rule of thumb is if you don't want something thrown at your head as hard as you can throw it, then strap or bolt it down. That includes center consoles; everything in center consoles and gloveboxes, tools, shackles, spare parts, and even those cans in the cooler. Everything should be stored away solidly as stuff can start rolling under brake or throttle pedals which can help lead to a rollover. Also note the incorrect driver's grip on the steering wheel; during a roll or any wheeling adventure keep those digits outside of the wheel. If the tires grab and spin the wheel you could be going home with broken thumbs.