Just when you thought the roads might get quieter, legislation has been introduced that requires electric vehicles to emit sounds when they are traveling at low speed. This legislation comes into force next year. Car makers have spent years in their laboratories trialing various sounds, some of which can be found on YouTube. Audi appears to have adopted an electronic noise not dissimilar to that of petrol cars, but Jaguar have come up with a noise that sounds like movie makers imagine an alien spaceship sounds like when landing. I imagine it will be just a matter of time before all manner of inane sounds can be downloaded, as happened with mobile phones. Maybe someone will design a noise similar to screeching tyres, overlaid with "Get out of the f-ing way!" to appeal to SUV drivers. If you were given a choice of sound for your electric car, what would you opt for?