Hit 5100 miles today and it averages 45 in the cold weather, 56 in 60+ degree F weather. I was thinking of deploying a sail that ummm fell off a truck to make the car more efficient. I have a few gerbils i may throw under the hood like turbos. I have a few rockets I can lash to the car too that I might try to go faster and still get good mileage. Hey how bout a v8 in the back seat like the Road warrior? If you aren't laughing by now at my sillyness then u r way too uptight hahahahhah PS: Where can I get a deer rack for the Prius?