ST stands for "See Tanya? It's a family car. It's perfect for our first child. These seats hug you. We can treat ourselves. We don't have to get the base model. We can treat ourselves to the high trim. This one has navigation. It gets good mileage. Ford is really good these days. What are these dials? I don't know. They probably don't mean anything. Oh look big strong brakes! Yes, yes, this car is safe. I've sold my RX-7 like you asked... no more fast cars for me... nope. I promise. Yes. You like it? Good, let's buy it."