I would make a cart that uses casters for wheels and a rope attached so
it can be pulled from the store to the van. And a ramp made with a lip
so the cart will not go off sideways. If it is too hard to pull the
loaded cart up the ramp, buy one of those electric winches and attach
it in the van.

So my way would be pull the cart next to the bag. Tip the bag onto the
cart. Slide the bag so it is securely on the cart. Pull cart to van
and up the ramp. Roll bag off cart and take cart to get second bag.


Dan