Apologize for the nerdy first question, but I see a lot of tech types here so ... Looking at the 2019 Tesla Model 3 AWD Long Range, for example: EPA says it has a 310 mile range with 29 kWh/100mi combined (hwy+city) efficiency. But with a 75 kWh battery, I only calc a 259 mi range. Similarly if I calculate ranges using the reported city or hwy efficiencies (MPGe, and using the EPA's 33.7 kWh/gal) I get city and hwy ranges substantially lower than 310 mi. First thought was that I have the reported battery size wrong. But the same thing happens with any other electric vehicle I've looked at. Don't think I have ALL their reported battery sizes wrong. Could it be that the manufacturers are under-reporting their actual battery capacities? If so, could the EPA range estimate be used to back-calc a more realistic battery size? Which I could then use to calc a HWY-only range estimate using EPA's HWY efficiency, for example? ?? Confused ??