Amazing mileage for a short trip!

Made a stop at our local Walgreens before making the trip down to visit my mom. Couldn't believe what I saw when I parked after the trip, so had to take a picture. First time I've seen a trip post a 100+ number. AC was on, fan on low, cooling to 73 degrees. It was upper 80s outside. Trip was mostly down hill. Return trip was 30.6 mpg for the full 10.1 mile trip home.