I’m looking to cart products around to sell on foot.

Basically I want a box on wheels with bars in the front that I can lift and then walk forward. Similar to the idea of a rickshaw, but instead of seats for people, a container that can hold ~200lbs of weight. Or the type of thing you’d connect to a bike, except I want to just pull it on foot. The added element is that I want to be collapsible or able to be dismantled when not in use. Surely this must exist but I have no idea what term to use to search for it.

“Rickshaw” mainly brings results related to pedicabs. The closest I got was “utility cart” like this for example. But the problem with these, unlike a rickshaw style design, is they don’t scale well with the addition of weight where two wheels is easier than 4, depending on the surface. Also, versions that can be taken apart of collapses aren’t rugged enough.

I’ve used a hand truck put into the flat configuration in the past. But that lacks the box component to contain the products. I can stack boxes on it, but that gets unstable. And, again, the 4 wheel flat design doesn’t scale well with weight compared to the rickshaw concept.

So, yeah: what do you call that?