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Has anyone tried using L instead of D for faster ICE warm-up? I realize I'm asking this question just as most of the country is no longer feeling the pains of winter, but since our weather still feels like February I figured I'd ask. I just tried doing this yesterday. I don't know what the impact will be on MPGs but the ICE definitely warms up faster and thus will shut off sooner. Here is an explanation of how L works for those who haven't tried it: L enables the hypermiling technique of DWB (Driving Without Brakes). As soon as you take your foot off the accelerator the car begins powerful regen. The ICE also does not shut off unless you come to a full stop. When accelerating the ICE revs much higher than is necessary to push extra electricity back into the battery. The ICE seems to rev to around 3000-3500 RPM when it would normally do 1500-2000 RPM in D. Yesterday and today on short trips I tried shifting the car into L as soon as the ICE came on the first time and using ET Mode to watch the coolant temp. Once the coolant temp showed about 35 C I shifted back into D and the ICE soon shut off. I was then able to drive the rest of the trip without engaging the ICE again. I have been able to get over 40 MPG doing this on my 1.3 mile drive to and from work yesterday and this morning. Both mornings were cold. Yesterday it was around 20 degrees in the morning and 32 in the afternoon and this morning was about 25 degrees. The MPG results from those few trips seem higher. My theory is that using L while accelerating will help improve mileage by allowing the ICE to turn off sooner and not waste gas while sitting at a red light waiting for the ICE to warm up enough to turn off. This could also help to get heat faster in the winter as well. Has anyone else tried this? What are your thoughts on potential benefits of using L? Will sustained use of L and higher revs on a cold engine do any long-term damage? Thanks