Hi COcyclist, glad the heater pad work out for you.
I am still doing my 108 mile commute at least 5 days a week. I have been averaging about 80 MPG this winter because I have discontinued my extreme hypermiling and now drive at the posted speeds with only DWL as a ecomodder aid. Average speed is now 55 MPH per the MPGuino.
Today it got up to 75 degrees and I did the trip at 87 MPG, so maybe I can get my average up to 90 MPG this summer.