I've read several long, somewhat complicated (to me), instructions on "Pulse and Glide." I also read about drivers who say they can go into "stealth" mode for 5-10 minutes. I don't understand how this is possible without using gas. Sometimes I can feel the car glide for a few seconds if I let up on the accelerator a tiny bit, but if I take my foot completely off the accelerator, my speed goes down. I don't understand how anyone can maintain a certain speed without pressing (even gently) on the accelerator. (Not counting when going downhill.) I am not an engineer. Can someone give me simple instructions on how to achieve the "sweet spot" or "stealth" mode? Except for one day when the car inexplicitedly got over 70MPG, I usually get 45-46MPG. I've had the car for 14+ months. I drive very conservatively. This isn't urgent but I'm just curious if I'm missing something. Thanks for any feedback.