I sent a couple of letters. Don't buy the bikes make more pollution. The total embodied energy and pollution of a car, cradle to grave, including infrastructure (roads, highways, parking) is way more than a scooter or motorcycle. If that were not true, then this photo would never exist... the folks in the picture are all on scooters and small motorcycles. Imagine if they could afford cars... photo of a traffic jam in Jakarta from the Globe and Mail.