I've wanted one for almost 10 years now since Musk came out with his roadster. The model S is on of the best vehicles I've ever driven! With it's new batteries and the widening network of free charging stations across the USA, it's actually practical now.
Still can't afford one, though, so I drive a Nissan Leaf; most of my driving is local commutes(work, groceries, hardware store, etc.). Had it for 2 years now---no complaints and no longer have "range anxiety" as I've learned exactly how far I can travel before charging. My charging system is 220v and is linked to my photovoltaic system that runs my home. No body is burning coal to charge my car! Truly, no expenses, ever, except to finally replace tires sometime in the distant future.