Cab drivers in Shanghai are ranked on a star system - from zero up until five (although there are some urban legends about six-car drivers out there somewhere.) The ranking system is based on experience, skill, and, supposedly, English proficiency (to help all of the Expo tourists!) In our whole year here, Jeff and I have only gotten a five-star driver twice. Both times were amazing. They easily understood our stilted Chinese and quickly and safely got us where we wanted to go. A handful of other times, we've lucked out with a four-star cab, like the one picture here.
Between very inexpensive cabs, the extensive Metro system, and buses on every corner, it's been easy to live here without a car. I'm going to miss that!