There's something inherently interesting about watching people in transit, in the very process of movement, change, adaptation. And people around food? Always revealing. This is one of seven La Carreta Cuban restaurants in the Miami area, though this particular location has blended in to its airport setting by being a self-serve, overpriced, eat-and-run-and-fly cafeteria. The whole mundane panorama is here to be entertained by (or ignored, depending on how the trip's going). Someone is always rushing in and out, almost falling asleep, almost hysterical; travelers from all over the globe -- shuttle drivers, mechanics, airplane crews. Anglo pilot orders the classic Cuban beef dish ropa vieja from Latin server: "I'll have the old clothes, por favor." Server doesn't miss a beat.