If there is a more dangerous form of transit for hire, I'm not sure what it is. Sure the motor-cycle taxis are a bit of the risky side, but the tuk-tuk drivers are fearless, playing with your life as if only the back seat was going to die in a crash. These three wheeled rickshaws are called tuk-tuks on account of their two-stroke engines, which are probably some of the heaviest polluters on the road, tough most drivers make up for it by wearing a mask on their faces. You too can own a Tuk Tuk: contact Tuk Tuk Industry Thailand, 463-465 Prachathipok Road, Bangkok.