Sometimes I'll fill up the tank, on the way to the airport (usually if I'm in an area with lower fuel costs) or perhaps the night before (to speed things up the next day).
Then I might have to drive some more & fill up to full again, but that second filling might cost only a couple more dollars.
When filling up with such low dollar amounts, I always look around for an extra receipt at the gas station, just in case I'm hassled (some agents don't understand the dynamics of cars and how much little fuel can be consumed over a long highway distance).
Usually though, I don't have "fun" filling up the tank. It's often like "another 70 bucks in fuel, sheesh!"