I am picking up my first flock of 8 day old chicks next week. I live in NH and it has been VERY cold here, and I have to drive 60-90 minutes to get home. Any ideas on how to keep the chicks warm and safe in the car? I am a newbie at this so any ideas will help! I did read on an old thread, to put hand warmers wrapped in thin towels in the box and this should keep them warm. would this keep them warm enough? Thanks for all your help!!