When I lived in Tucson, I didn't own an air-conditioned car. I found that a Dairy Queen Mr. Misty would keep the drive tolerable for an hour until I could get to the next DQ. You might try keeping a blender at home and at work, and make a big slush ice drink to sip on your drive while keeping the AC off. It might work, or at least help. If you buy Mr. Mistys to stay cool, the AC will be cheaper  .
I'd be happy with 34 mpg in your car. Hope you can keep your average close to that. If you can do better, my hat's off to you!
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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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