The increase in electric vehicles and hybrids on roads has also increased the risk of collision with pedestrians and cyclists. Since we have become used to the sound of engines alerting us to a car's presence, the silence of electric cars has caused safety concerns. To mitigate this risk the U.S. and Europe have passed a new regulation that requires EV's to emit a sound while driving under 18.6 mph or 30 kph to replace the sound of an engine. Automakers like BMW, Volkswagen, and Nissan are working with music composers to design sounds for their EVs. A composer from Man Made Music group guides us through their process of designing the sound for the Nissan LEAF.