OK, I did not buy my '08 RT for the gas mileage, but was wondering for those of you with the full electronics, at what cruising speed on level ground does the MDS switch out of fuel saver mode? Can't tell when it starts using all eight to overcome the wind drag. I took the Charger about 480 miles this weekend, at a cruising speed of 75-80, and got about 24.5 mpg, which I am happy with. Wondering how much fuel I could save cruising at say, 70-75 or 65-70 (that would be hard)!! Thanks.