Sheldon two-fer (three-fer)

Last week's two-fer was from Dave Kellet's Drive webcomic.  This week's is from his Sheldon webcomic.  I've only posted a couple items from Sheldon in the past, but it's truly great stuff that y'all will love.  And the super swell thing is that this is the debut of Nebraska in our ongoing states-that-have-been-referenced-in-map-related-comics series, bringing our total to 19!  Please submit comics about your state so we can get all 50. (and I'll gladly accept submissions of non-state U.S. territories too).