To a large extent, the Expo has proven exemplary in the low-carbon drive, a new concept that has been on the lips of many ordinary Chinese people since the Copenhagen summit last year.

This is certainly a blessing.

Beware, however, just outside the Expo Park enclosures, there is still much room for us to promote the green concept and strive for a truly green city life.

One of the most visible disappointments is on the streets.

Friday's lavish Expo opening was followed by some chaos on Shanghai's roads.

Until after midnight, crowds of people, including Expo journalists, tourists and Shanghainese who were given a week-long holiday for the event, were seen within a radius of 5 km around the Expo Park, waiting for taxis.

As Bjarke Ingels sees it, the situation would be much better if they all go for a bicycle ride.

"When I was a kid and I saw pictures of China, I saw streets full of bikes and almost no cars," said Ingels from Denmark. "Now that I'm in China, I see streets full of traffic jams and no bikes."

Ingels, chief designer of the Danish Pavilion at the Expo, said he would like to remind the Chinese of how cool it is to ride bicycles, a fast, stylish and healthier way to travel.