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So, it would help us hypermilers to know which highways are concrete & which are asphalt. Where do we find those data, short of sampling every highway on our routes?
I might choose I-80 over US 50 for a weekend drive to Reno for a 3% gain in FE, but I'd need to know what each highway is paved with before starting the trip. I suspect the Interstate Highway system has pavement standards, but how much flexibility does each highway department have to choose its materials costs v. its labor costs?
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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