Hi DIXE,
I too just picked up a used '08 cabriolet, with 3500 miles on the odo. You said you were given the "keys", did you get one or two, as I only got one, and the salesman said that was all there was with the car. I didn't get the car from a Smart dealer, but from a Dodge dealership, that someone had traded it in. I asked the salesman about there only being one key, and he said that the sales manager had handled it and was off for a few days, and he'd ask him about a 2nd key when he gets back to work. I'll have to look into getting another, as I'm a bit paranoid, if I lose it, I'm up the creek without a paddle. Good luck with your car.