(CNN)It’s a sound that has defined Formula One — the guttural, ear-deafening sound of the combustion engine, which has provided the background symphony to the sport since 1950. But for how much longer?
Gas-guzzling F1 cars have been at the top of the motorsport tree for nearly 70 years but leading voices — including its 2016 world champion Nico Rosberg — say the historic series must switch to electric power to survive.
Formula E is greener, leaner and already fully electric.
