Despite having a hybrid that I can run the ac all night, I have been trying to limit how much I run the ac each night.
When I leave the office, I turn on this fan to get the 70 degree ac temp to the rear of my hatch area.
Then when I get to my parking spot, I turn off the ac (leave the car on) and can usually get 2 hours before it begins to really heat up inside the car.
I'll kick the AC on for 2 hours, and then turn it back off.
As a result my car doesn't cycle near as much each night and my idle MPG has gone from 15-18mpg to 23-25mpg.
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