Debating acceleration techniques

[why?]

you'd really have to try both and figure out what works for you. There is so much difference in driving terrain alone that what would work for me might not work for you.

I live on a main road, and it might take 1/8 of a mile to hit 50mph, which is the speed limit. I don't rev the car above 2000rpms, I don't press the pedal down very hard at all.

I do almost always get at least 36 mpg while driving very short trips, at speeds almost always 50mph or below.

The one thing that seems to really make a difference to me for the Yaris is rpm's. Allowing the car to rev between 2000 and 3000 rpm dropped my gas mileage. I can't come anywhere near putting the pedal to halfway before I hit 2000 rpms in every gear.