This video gives you a little history behind what John is now calling Mary's Cart.
John has been biking and building bike and hand carts for most of our married life (As of today 44 years).
When we lived in Japan, John built a special bike cart to see if we could do a complete household move by bike. Yes even in Japan that was a strange sight.
After hundreds of hours of research and testing he thinks he came up with the ultimate design that even an inexperienced person could build.
Thus he called on me to make it. You can see those videos at: