Ha, ha Joebird, I did think about it. But as soon as I was out of Summit County and away from that paticular Sheriffs Dept. jurisdiction, I figured I was in the clear. The biggest thing I worry about is the OHP, and not having a front plate for them to reflect their radar off of.
MAKIII I'm glad you enjoyed it, it was just for fun, and not meant to be the definitive answer to any specific gas mileage questions.
I never expected such a increase though.
I wish I could have restrained myself, and kept the speed going North exactly the same as I did going South. But we left so early in the morning that we were about the only automotive traffic on the road, so all I was doing was passing trucks.
Coming home, there was a lot of passenger car traffic, and if I would have stayed at the lower speed, I would have been a rolling road block everytime I passed somebody.
Probably the best place to conduct such an experiment would be Florida. Running from Jacksonville, down to Miami and back. Nice and flat, I don't think crosswinds would have much effect, and it has a pretty constant temp. Any takers?
Or another possible test, which gets better mileage, coupe or roadster? Or what's the difference in mpg with the top up vs top down? In a coupe, windows down vs windows up. Inquiring minds want to know.