I have a regular circuit that I maintain around California and have certain spots where I stop and rest in my car and I know that I can rest better at places where I'm familiar with where I've been there before rather than new places I know I'll be less rested after a car nap at a brand new place.
http://www.npr.org/sections/health-shots/2016/04/21/474691141/half-your-brain-stands-guard-when-sleeping-in-a-new-place
Vk
