What kind of EVs?
The Aptera?
Peter Perkins' Solar Powered Van?
If we switch to painting the entire bodywork in cheap recyclable low-light efficient photovoltaic paint made from carbon buckyballs and nanotubules, and photovoltaic dyes in the windows... and hemp sourced graphene capacitor bank batteries, EVs could help protect the environment, yup.
... And likely help protect pedestrians and cyclists too... certainly far more than the high-mass high-inertia high-hood high-glare low-visibility SUV tanks going around.
Edit: Hrmm... why'd those image links no work? http://www.evuk.co.uk/imgs/solarvan_ev1.jpg http://www.evuk.co.uk/imgs/solarvan_ev2.jpg Edit: Oh, because http not https?