First the current Post Master General needs to go. He cancelled an order of electric vehicles and reordered them as fossil fuel. Biden forced him to undo that IIRC. These are vehicles that are used in Cities to pickup mail and for mail carriers to use. At most they do 100 miles per day, and that is an over estimate.
But the USPS would not have to do that plan if the GOP did not cut there funding to the point were the stopped making a profit using creative accounting 20+ years ago. So Tulsa and Fayetteville, you get what you pay for :)