(As an aside, it obviously costs quite a bit to ship gasoline from Texas to the East or West Coasts. Those price differences are larger than the difference in tax rates, and you'd expect them to be arbitraged out of existence if the transportation costs were lower.)
There's no pipeline to the PADD V states on the West Coast,
so domestic oil is pretty much all California or Alaska.
There's some coming by train now, but it's not that big and of course it's crude rather than refined.
A little googling tells me that it *is* expensive to get oil to the east coast (PADD I)
http://www.refinerlink.com/blog/US_PADD_Overview/
This explains why the west & east coast prices stay up when Texas and the Midwest drop.
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Anderson, FWIW, my spreadsheet estimates (with overhead "backed out") currently give before-overhead profits of:
Auto Train -- $35.5 million
Silver Meteor -- $15.3 million
Silver Star -- $4.8 million
Palmetto -- $7.2 million
These may be wrong if overhead has been shifted around in the last couple of years.
I am increasingly of the opinion that the correct analytical structure, from a planning perspective, is actually geographical. Trains on nearly the same route behave pretty similarly, regardless of amenities (even if the amenity is "bring your car"). Segregation into "commuter rail", "corridor", and "long-distance" is artificial and confusing.
Spreadsheet also guesses profits for:
Lake Shore Limited -- $3.7 million
Empire Builder -- $0.7 million (this is probably wrong, remember the error level in these estimates)
The other long-distance trains are still losing money before overhead allocation. (Cardinal should be profitable if daily; Capitol Limited may be profitable if connecting revenue is counted, and should be profitable with Pennsylvanian through cars.)
If there's some desire to cross-subsidize "emerging" routes from the profits from successful routes, you probably don't want to split the Auto Train and Palmetto out separately, it'll make the Crescent (for example) more of a target. The Auto Train is actually getting to the point where it can cover more than its allocated overhead.
(Even without the Auto Train, it looks like the Florida & LSL profits cover the avoidable costs of the CL, Cardinal, Crescent, CONO, and TE. But there's that pesky overhead.)