Motorcycle drag racers compete outside Bangkok The streets of Bangkok are frequently clogged with thousands of motorbikes, and many Thais learn to ride the vehicles from a young age. But for those wanting to take their riding to the next level, a stadium on the outskirts of the Thai capital hosts monthly drag races. On thin tyres offering only minimal grip, competitors try to attain the highest possible speed over a 400-metre track. IMAGES AND SOUNDBITES