The key is your speed. Congrats on it! My commute is 21 miles into downtown Seattle. When I carpool with my wife, and can use the express lanes (60mph), I get 57-60mpg. The other day she stayed home, and I was stuck in traffic (35-45mph) and hit 69.7! It LOVES to putt along at 35-45 mph.
great. 30-55 mph is the best speed for this car. I can 80 MPG for a 10 mile strip last time. very impressive.