And if you're distributing via truck, that vastly reduces your output - the truck's burning your output while it drives thousands of miles.
but it would be much faster to simply use the existing road network and keep the deliveries local.
Except that's not what you were just talking about - you were talking about using the ample solar power in the southwest to produce the fuel.
A distributed network of conversion plants across the Midwest and Southwest could ultimately supply 100 million people with automotive fuel
Except that you can't do that with "local deliveries".