Being retired, I strive to avoid rush hour work commute traffic at any cost. The risk of accidents skyrockets during commuter hours. So, that, I am sure helps my miles per kWh. I just prefer to use "D" mode, and if I need to brake, I down shift to D1, then D2. If that avoids using the tail lights, so much the better. I don't ride anyone else's ass when driving, and I don't like being tailgated myself. I leave plenty of space and time between myself, and the car in front of me, as well as plenty of reaction time to slow down. That's just me, YMMV.