Gas cars have had destination-less range estimates for decades, and as far as I know have never based it off of EPA fuel economy. Instead, they use the car’s ow

Gas cars have had destination-less range estimates for decades, and as far as I know have never based it off of EPA fuel economy. Instead, they use the car’s own recent fuel economy. Which concept more useful for drivers, the concept of remaining range if you keep driving the way you’ve been driving, or “how many miles the car can get in the EPA test cycle”?