While Frank I were in Rome earlier this week we saw a lot of interesting parking jobs to most effectively utilize the limited space available. My particular favorite was the creativity used by two passenger Smart Car drivers.
On several occasions (like this picture I snapped next to Trajan's Forum) the Smart Cars parked perpendicularly on the side of the street where the other cars had parallel parked. Parking flexibility definitely seems to be an advantage of driving a two passanger car!