"Can the city become a symphony? Electric cars are increasingly using synthesised sounds in order to mimic the traditional noise of the internal combustion engine. I explore an alternative in which the sound that the cars generate changes according to its relationship to other road users and the environment.A traffic simulation is used to power the movement of vehicles through different sections of road networks in London. From a street level perspective the motions of traffic combine the sounds, creating soundscapes that are unique to the place and time. The roadside becomes a new context for sound - the city is the score."