Bad politics for sure...but is it a good idea?

This isn't an issue I hear about from advocacy groups, politicos, or the mainstream media, so thanks to the wonder of having my own blog, I will bring the issue up. Consumer Reports magazine, published without advertising by the non-profit Consumers Union, recently did a test that showed what we've long known, that driving at higher speeds requires a lot more gasoline. Specifically, they tested a four cylinder Toyota Camry with automatic transmission and got 40 miles per gallon cruising at a steady 55 miles per hour (not bad for a midsize with automatic), but at a steady 65 mph, that fell to 35 mpg, and at 75 mph, mileage fell even further to 32 mpg (later reported as 30 mpg). Many decades ago, when we faced an energy crisis, the nation instated a coast-to-coast speed limit of 55 miles per hour to save fuel. Still earlier, during World War II, there was a national speed limit of 35 miles per hour to save fuel for the war effort. Today we are at war again and know so much more about fossil fuels' effects on the environment and climate. Moreover, higher speed limits can result in more highway fatalities, although in areas of rural Arizona, there is very little to hit no matter the speed. We hear talk about hybrids, and some of us talk about having mass transit and walkable neighborhoods, along with inter-city rail. But should we again consider lowering our speed limits (whether by 5 mph, 10 mph, 15 mph) to save fuel, lives, and the planet? Please feel free to vote, and to leave comments.