That's kind of cool, never saw something like that before.
Yeah, I was thinking more along the lines of what
@Philbert mentioned. Well, except the "chain to a post; then floor it!" I would love to build a sort of dump truck in a van contraption. Maybe reinforce the truck bed liner so it doesn't bend, enable it to roll partially out of the van, have a latch or something that restricts it from rolling all the way out, then let it swivel down once it's rolled out of the van. I could reverse it up my driveway, open the double back doors, pull out the liner until it drops down at an angle, drive the van forward to get all the rounds out, slide liner back in, close doors and roll out to scrounge again.