Hmmmm,
I really like those one-wheel swivel trailers, or even the two wheel ones that track real good, but don't want to pull anything else, also the small tire concerns me, I would always be worrying it would blow.
I would love to have a $500,000 class 'A', just so I could carry all my tools and pull a car trailer. (Full of welders Plasma cutters and 'guy stuff'.)