Outside the Market during the Blue Hour

The blue hour is a short period before sunrise when the sky has a dark blue cast.  The Hanover market opens at 6 am on Saturdays and you need to be there early before some items are sold out.  I would like to get out earlier at least one day a week to get pictures during the blue hour or right after sunrise.  Since the weather will be turning cold I will probably be doing most of my photography at that hour from my car.  I thought that taking pictures from my car would enable me to use my heavier and longer lenses on my K-3, and it does; but, I still find it a lot easier to use my Ricoh GR.