Obsessive Compulsiv e

So, for the sake of curiosity, I ran a little experiment: Last time I filled my gas tank I turned off my A/C and began driving ultra conservatively. i.e. shifting at factory recommended RPMs, using cruise control, and driving at the posted speed limit at a constant rate. I filled my tank back to full after 53 miles to find an average consumption of 32.3MPG for my round trip to work down the freeway; which is depressingly good compared to what I usually get, 26.7MPG (+20%!). Running the numbers, this translates into roughly $10/week or 7.4% of my commute budget. And, whence put in that perspective, I’ve turned back on my A/C and have returned to driving as normal. (As it would take 40 years of driving like that to save enough to buy my car again.)