Hypermiling at 80 mph
Yeah, well, that was the max speed, but the title sure sounds catchy!
We did the spring break tour of the Southwest, and as they say, we had a long way to go, and a short time to get there. What to do? I did not want to totally sacrifice fuel economy, but we were on a tight schedule.
Introducing the 80-60 P&G! (SL is 75 in AZ, so only 5 over on the top of the pulse!) ;-) On the first day on I5, I managed a 45mpg at an average speed of 66 MPH (both the SGII and the Garmin agreed). My incredibly good luck was that I had an 18 wheeler traveling almost the perfect speed, and I managed to draft him for over 200 miles. I didn't always have this to rely on. The result was good enough for the experiment that I immediately decided to continue it. The second day to Kingman I had to hurry too much and got my worst FE of the trip at just under 40 mpg. Suprisingly, the climb to the Grand Canyon and Indian Country gave me my best mpg at just over 46. I also had good MPG down to the Petrified Forest and Holbook at almost 44. Then coming west to Boulder City, I had to drive into a 35 MPH headwind naked. Needless to say, I only got 40.5. Then the last day home, we came through the Kelso dunes, to Bakerfield and back home. Having lots of up and downs and no good draft target, we came in just over 40 again.
Still, I managed to beat the EPA on a high speed vacation trip. Particulars:
MPG 42.45 (109% of highway EPA! Woo Woo!!)