Cars create noise, and as irritating as this may be, it has its purpose. Without sound, we may not be aware of oncoming vehicles, and thus our lives can be endangered. But what if a car no longer makes a noise and it has no driver? What then? And how will autonomous cars communicate with pedestrians and cyclists? Watch this video and listen to Mikael Ljung Aust, senior technical leader for collision avoidance functions at the Volvo Cars Safety Centre, explain some of the challenges and solutions. Source: Nikki Channells – Haveyoursaysa