That's not how physics works. 'Accelerate quickly to save energy' is massively off base as to what burns energy. the rest of the advice amounts to 'don't drive it like you stole it' with a touch of 'you're too dumb to understand air resistance goes up dramatically as you drive faster'.It's a pretty good article. When they talk about getting to know the gauges they should also caution that you shouldn't get too caught up in the gauges, still have to worry about driving the car. Best advise the article gives is to accelerate smartly up to speed or a few mph. over what you want and then back off the throttle a little to get it to kick into EV mode.