I find the Smart cars to be kind of "cute" if you will, and given your stated purpose, a Smart makes some sense. And I never really knew that there would be such a wide variety of mods available, and I do commend you on a great job!

Still, if I were to need a small runabout car, I'd most certainly get a Honda Fit. About the same price, usable back seat and storage. If places like train stations and the like started to offer parking specifically made for micro cars like the Smart, and with lower parking fees since you are only taking up half a spot, the Smart car value proposition increases greatly.