I used similar one of those here for awhile, three wheeler, until something, forget now, something major broke and the boss had it hauled back to the shop..where it is sitting with 200 other pieces of whatevers. The one here had a full cab, it was fun and I did some firewood with it.
We have two both four wheelers one is 60's model air cooled the other is early 90's model water cooled both have cabs and doors we use them on the farm doing spraying to hauling any thing. They are good solid machines.