I excavated this photo of an interesting US moon rover concept from a 1962 Hungarian science journal. I have not seen this prototype before, and sadly there is only a little info about it.
What is known: It was made in the United States. The inflatable wheels were made of polyesther and aluminum, each of them are 6 meters tall, but only weigh 60 kilograms. The whole vehicle was 1200 kilograms.
I don't have any idea who created this design, or which company made this rover in the heat of the Space Race. If you know more, share it in the comments, please. Here is the full, unedited image: