That's neat! I have an idea that you could try. I have a folding portage cart with light weight removable wheels that attach via pushpin axles into metal recei

That's neat! I have an idea that you could try. I have a folding portage cart with light weight removable wheels that attach via pushpin axles into metal receivers. Buy two extra receivers, drill holes in the side of the case, bolt on the receivers, and attach the wheels at the destination. I haven't used it for this yet but plan was I would just take the wheels in my carry on. I also have not work out how to attach the cart to the bike yet. Wike sells the individual wheels, pins, receivers (2) and even a diy box trailer kit(1) using these parts with instructions if looking to visualize this. (1) https://wicycle.com/products/bike-trailers/diy2 https://wicycle.com/products/bike-trailers/diy2 (2) https://wicycle.com/support/replacementparts https://wicycle.com/support/replacementparts