Absolutely true and it works. For example, my Tesla S (2014) very accurately predicts mileage going from Los Altos to Tahoe (up hill, have to recharge on the wa

Absolutely true and it works. For example, my Tesla S (2014) very accurately predicts mileage going from Los Altos to Tahoe (up hill, have to recharge on the way) and from Tahoe to Los Altos (down hill, can barely make it back without charging).