The way it works: Each table has a tablet with the menu for ordering. Order in groups of four - the trains have spots for four dishes - but order as much as you like. When the order is ready, a little "bullet train" (looks more like a lengthy car) zips down the runway along the booths and stops at your table. Remove the dishes and the car zips back to the kitchen.
It's tapas-like, with very small plates. We ate about 16-20 dishes for everyone to have enough food. To be completely honest, the cooked food was quite a bit better than the sushi. And the novelty ... we'll try to get back once more while we're still within walking distance.