Hi. While I eagerly await my Millennium Silver Pkg 4, I've been curious on the group's take on my commuting situation and recommended measures for best fuel economy. 3 of 5 days a week, my commute starts off with a short 5 minute drive to drop my kids off at daycare where I'll typically be in her house for 5 minutes or so. 1 day per week the reverse is true whereby I pick them up on the way home. As this is a safe location where I would not be concerned with leaving the car unlocked and on, I was thinking that leaving the car on might be the way to go since the car has already had the 5 minutes to warm up on the way over. I live in New England so winter may be a factor as well. Thoughts?