What is in this image? Describe it as if you were explaining it to someone from the 15th century.

This image depicts a curious sort of wagon, unlike any horse-drawn conveyance you might know. It''s a boxy cart with four circular wheels, crafted without spokes, completely solid. The front part houses a small, enclosed chamber with a door and a glass pane, presumably where a driver would sit. This cart lacks horses or oxen for movement, implying it moves of its own accord in some miraculous manner.Aft, there''s a large, open holding area where one might place goods to be transported, though curiously, at the back, it features a tall, articulated arm ending in a hook. This is likely used to lift and carry burdens or perhaps even to rescue other such carts from ditches or cumbersome spots. The entire contraption is crafted from lines and shapes that denote simplicity and functionality, with no lavish decorations or heraldry as wagons of your time might bear.