Since it was introduced to US market in 2006, Smart's size can be more effectively. When it is compared with huge American SUVs, when we can see that Smart is really small! This smallness is not a good sign for safety.
However, if you are living a crowded city and you could only speed up 60 (if you are lucky) then the Smart is the best option for you. Despite its high price tag in some countries, Smart is very ideal for city driving. Especially for one reason! Parking. With a Smart your parking ability is not limited to horizontal, you could also park vertical. As you can see from the pictures which is taken in Athens.
