I know what winter is, having lived in AK, CO, and UT for 15 years. I have to admit CA winters are ridiculously mild. But if I can average 58.84 mpg now, I might be able to push 70 mpg in the Summer, and that would put a 750 mile tank into the realm of possibility. 
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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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