WHEN WE TRAVEL FROM NEBRASKA TO TEXAS, WE USUALLY MAKE IT A POINT TO GAS UP OUR CARS AT THE SAM'S CLUB IN SALINA, KANSAS. They often have the cheapest gas price of the whole trip. Not always, but often. Of course you need a Sam's Club card to get the full discount.
It is located on 9th Street at the south end of Salina, between exits 89 and 90 off of Interstate 35.
I-70 is the logical choice for getting to Salina. Salina is situated just east of the midpoint of the state on I-70. If you are coming from the south or north, I-135 will get you here. There is a small airport in Salina with flights daily to and from Kansas City and Denver.
Unfortunately, there is no public transit system in Salina. Either you have your own car, rent one (from Hertz at the airport), or you call a cab (City Cab at 825-TAXI).