Fuel Efficiency !
“I bought a used ZEV 7100 on Ebay. I calculated that at UK petrol prices, £6.25 per gallon, night rate charging, & based upon a 50 mile range, your 7100 gives the equivalent of over 1000 mpg imperial! —- but when it comes to ‘fuel’ efficiency, nothing else comes close. Not even my 185 mpg diesel bike!”