I drove one of the new Smart Cars (a friend bought one.) It was smaller than a Kindle and twice as ugly.

The inside was constructed of cheap feeling materials and there was barely enough room to squeeze my 6' 5" frame into the seat. Other than that, it had little or no power. The gas mileage was the about the same as the Honda Civic that has more room and more power. You could put the Smart Car in the carry basket of a Vespa as an emergency vehicle.
In short, I was not impressed with the car. I think there are many far better choices out there at about the same price point.