Winter is almost over. I had to make a trip to Boston with the GF and her car. Didn't need either the heat or the a/c. The gas mileage is improving. Her 07 Impala with the 3.5L V6 VVT motor got 34mpg on the straightaway's consistantly at 65mph but then city traffic trashed the mpg down to 30mpg average for the entire trip. I guess that's the best it's geared for. At least it was a comphy ride.