I grew up in Upstate NY, So of Syracuse and know what you mean about locals there being tight-lipped. But here in TN we get asked so many questions, photos taken and people waving, looking out of cars, pointing, motor cyclists waving and smiling that my wife doesn' want to ride anymore.....but I win, she does.
FYI there are about 3400 counties in the U.S. If Penske has sold less than that theree are fewer than one per county, that's why you don't see many yet, it's pure country size vs. import distribution. I have been by a few smart dealers and see at least 3-5 on there lots so that means there may be even less actually registered. In my county there is only one that I know of and I haven't seen them since I was at my local dealer when they picked theirs up - but others have said that they have seen the "blue smart convertible" in town. Give it some time, this is something quite new and doesn't have much in the way of dealer networking.