Wherever you go, you can hear people announce your arrival ("Smart car!"). That aside, the car has unexpected power on the highway. This car, like a small dog, doesn't know it's small. Love the convertible top, though, which can open and close at any speed. Mercedes technology makes the car very quiet with the roof up compared to other convertibles (like the noisy Miata, for example). You get used to the upshift from 1st to 3rd, although my spouse prefers to use the paddle shifters for a smoother transition.
Convertible top. Power on the highway. Surprising amount of room in the back for luggage or groceries.