One of the reasons i started this thread: You save a significant amount of fuel going 55mph on the highway. It's been said that setting the national limit to 55mph again would go a long way towards energy independence. There is a group of people unrelated to Ecommoder that does it for that reason. "I drive 55" is a simple thing they do to use less oil. Wouldn't you too if you could get near 50mpg at 55mph?
I'm going to be taking a 300 mile trip later this month and i plan on driving 55mph the whole way. Hopefully i'll set some record trip numbers!