Gas lines are not always long. I often only have one car in front of me, depends whether you go at peak time when everybody else does. If there is more than a couple minutes wait I skip it as the couple bucks savings aren't worth waiting for to me. Most times it is OK.
same here. Though, if I needs full tank in the truck, I can save $10 or so. I find that the lines move fairly quickly, but i won't wait more than 10 minutes.

