Ever have a really good waiter or waitress? Sure you have. There's a certain feeling you get when you encounter someone doing a really good job at something that maybe isn't the most important or exciting job in the world, but they've brought a level of competence and attention to it that just sort of makes you feel good about the whole experience.
The Elantra GT gave me a similar feeling. It's not the most exciting or interesting car, but it knows its job and it does it quite well. And, you don't have to tip it.