I continue to read blogs of people that have walked across the United States. Several have used a carts to carry supplies which seems like a good idea. Mark Baumer's cart kept breaking. It was essentially a stroller meant to be pulled behind a bike. In Texas people kept yelling, "Those babies must be dying."
Matt Green also walked with a cart, but his looked much sturdier. I kept searching for what kind of cart it was. It turns out that his cart also started as a stroller but was built by Runabout in Aloha, Oregon. The owner of Runabout will sell the frames separately.
Here is a picture of Matt Green with his cart. He also kept a blog that you can read here.
