Deleted:
3.6 miles from my morning commute.
1.6-3.6 miles (depending on whether I need to do anything in town after work) from my afternoon commute.
Saved miles and got better FE due to lower speeds.
And I deleted 40# of "spare tire" from the "nut behind the steering wheel". mostly for health reasons) That's transferable between my vehicles.
It helped my FE a bit, and it helped my skiing ability a LOT. It also increased my tolerance for hot weather, so I use the AC less.