1 It’s six o’clock on Sunday morning, and there are fifteen tuk-tuks waiting outside the Grand Palace in Bangkok, Thailand. A tuk-tuk is a type of taxi with three wheels. The driver sits at the front, and behind him is a seat for three passengers. Sometimes four passengers can fit into the tuk-tuk, but it is very uncomfortable! They are called tuk-tuks because of the funny sound of their small engines. There are thousands of tuk-tuks in Bangkok.