Originally Posted by RedDevil
...The one nut on which weight reduction might really affect MPG, in most cases, would be the one that holds the steering wheel. Or opens a can of soda. You get the picture.
Removed ~40 pounds from that "nut" almost 6 years ago. I'm sure it's helped my fuel economy in my vehicles a little. And it's transferable between vehicles.
It's helped my skiing ability and stamina a LOT.