[ygra]

Well, from the same article: »All a worker as (sic) to do is load the bricks into the machine in the desired pattern and gravity does the hard work«

So it is a more ergonomic way of laying bricks; you're doing it upright, not crouched down. But you still have to lay them. You can't just throw a pile of bricks into it and get a road out without workers doing anything.