I found a couple interesting articles on dsports website about brushless motors being used in fuel pumps and cooling fans about how they use much less power and last much longer. I thought about how this could apply to the mpg game. The cooling fans might not apply as much but the fuel pumps on cars are always running and what about using brushless motors for the hvac fan?
I know this falls into the splitting hairs category and may be far from cost effective but when going for maximum efficiency it sounds like a good idea...
http://dsportmag.com/the-tech/educat...-fan-solution/
http://dsportmag.com/the-tech/educat...cs-electrical/