Doesn’t seem too easy to access anything but the first row of boxes. Where would you even store these orange boxes that are currently on the hand truck? On top of the rack? Seems like fun lifting them 5 feet if they contain any heavy tools. With a Van you have access from the sides built in, and because of the lower floor you could even add a ramp to push your hand truck into the car without having to lift anything at all.

Btw. it’s possible to fit two pallets into a small van. Heck, you can even fit a pallet into a cargo bike.