For those of you that have a Valentine 1 (I got one for my b-day), how do you have it set up? I'm not thrilled with the idea of having it plugged into the lighter and having that cord dangling around, but I like the idea of being able to move it from P car to our other car which we usually take on road trips (when we take our dog with us). Anyone just leave it plugged in to the lighter? Also, do you keep it on in metro areas as well as highway/open freeway areas? Thanks.