Yeah , look at all those new buildings going up ! Mr . Zhang , the traffic is pretty smooth . But we were told the roads from the airport to downtown were quite crowded and traffic jams could be as long as half an hour .   Yes , they were . But it has already past . The traffic from the airport to downtown has been relieved after the completion of Yan'an Aerial Road .   We've never expected that Shanghai is such a big metropolis , same as New York city . David , would it be a good idea to rent a car here ? I've got an international driver's license with a pretty good record in the States .   That's wonderful . OK . I'll remember that . But I have to warn you that you must drive very carefully in the downtown area , for there're no separate lanes for motor vehicles and bicycles in some places , and still quite a few people don't take road regulations seriously . 