The fold-out unit was functioning about 3 minutes after I got the outer carton open -- snap-on wheels, fold-and-click bottom 'shelf', fold-and-click coupling tongue, quick-clamp receiver for the seat post... And the collapsing of the tongue for use as a hand cart is a natural, one-handed twist closed and twist open. I expect the whole thing including wheels will fit in one of my large rear paneers, but haven't tried it yet.E-bikers: take care cornering/maneuvering on hills or bumpy roads, as my cart toppled several times in these conditions. Just as a similar hand cart will lean over from time to time, think of this as a hand cart you can easily attach and pull with your bike -- not super stable. The telescoping tongue extension may improve tipping stability, fully extended? Anyway, probably does much better below 12mph, whereas on my e-bike I'm always itching to go nearly the class2 max at 22mph or whatever -- recommended only on the smoothest roads or with careful deceleration to more un-powered cruising speed, before bumps/curves.You're going to want a dedicated bag or two that coordinate well to this bike. Well-fit rubber bungies with a hook that's well suited to the provisions on the trailer frame should improve stability and carry capacity / variety of bags you can properly secure to the frame.The lowest tie-down provisions on the Travoy frame could benefit from being lower? As low as possible? I had a standard recycled shopping bag slip out from under the lowest tie-point several times (causing or caused-by my tipped trailer? -- not sure which).