This is already explained in the article, fourth paragraph: >One reason the paper suggests for why EVs fail to match expectations is how the range is calculate

This is already explained in the article, fourth paragraph: >One reason the paper suggests for why EVs fail to match expectations is how the range is calculated. While separate city and highway range figures are computed behind closed doors, only a combined number is presented to consumers. The combined rating is weighted 55 percent in favor of the city figure, where EVs typically perform better. This inflates the range estimates, making it harder to match in real-world highway driving. The paper proposes publishing both city and highway range figures—as with fuel-economy estimates for gas-powered vehicles—to give shoppers a more holistic sense of a vehicle's abilities. The problem is that measuring range in a city is nonsense. People only travel long distances on highways. This is no surprise: that's what they're built for. Efficiency matters in a city because most driving happens in the city. Range matters on the highway because most long-distance driving happens on the highway.