The smart fortwo started of VERY ugly and gradually got better.
This peaked at in 2004 with the release of the mk7 700cc and then tailed off quick with the 451.
However, compared to the amazing crosstown that smart should have made, the 450 is ugly.
The word from smart is that if the 451 does well in America then it will reconsider making the Crosstown. I would buy one without a second thought.