As a former forklift operator I would not get in this for one reason and one reason only I wouldn't be able too see behind me as most of us would be driving backwards until we were loading the containers as it is sometimes too hard for us to see over our load, not to mention backing up out of a container. Cool design though.
I would recommend changing the wheels. Many forklifts are starting to use a pair of wheels that actually allow them to move in every direction because of the shape. They seem to be like rubber cups at a angle going all the way around. [link] (dot) com/media/images/img_55.jpeg