We tend to avoid scooping up sushi whenever there's no chef in sight -- at, say, a grocery store, or a gas station -- but we've always assumed there was a human cranking out maki somewhere behind the scenes. If Suzumo's SushiBot makes it to the production line, that may no longer be the case. The compact machine doesn't exude beauty in the traditional sense, but what it lacks in elegance it easily makes up with efficiency. The contraption can plop down rice clumps for nigiri at a rate of 3,600 per hour,