I'm a bicycle courier. I pull up at a set of lights. I look at the cars beside me. None of them are dungers, I've got some competition. I wait. It takes an age for the light to turn green and start the race. Finally, we're off. My legs arc up and the engines roar. I barely keep up and finally pull ahead as they begin to brake. My heart pounds as I stop pedalling and pull up at the red light, in front of the cars. Thinking "You fools", I sit back, take a lungfull of hot city air and wait for the next green...