>>My vehicle would have gotten the same mileage at 55 that it would have at 70.<,
I drive a Chrysler 300m, which has a very low drag coefficient. My normal long distance freeway mileage is in the high 20's. But on one trip I drove from Seattle to Portland and back and stayed between 50 and 55 the entire trip.
I got 35 mpg!
That said, the 55 mph speed limit is ludicrous. As one poster said, time is money. On a long trip, the time lost is staggering. And for goods shipped by truck, it is downright INFLATIONARY!
Maybe they should control the length of my showers as well.
The useless twits!
"I drive a Chrysler 300m, which has a very low drag coefficient."
For a second there I thought you must be on drugs or something, until I noticed it was a 300M you were talking about, not a 300C. I can't see that big tall grille and hood, and squared off tail on the 300C being very slick aerodynamically. But the 300M had a much smoother shape.