Stranded on the highway. What does "E" mean?

[QUOTE]
*Originally posted by Kwyjibo *
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Man, same thing happened to me, too. I was living in Fort Collins at the time, and driving up I-25 after visiting my then-girlfriend in Denver. My car literally coasted to a stop in front of the regular unleaded pump at Johnson’s Corners.

This planner keeps a two gallon (8 liter) gas can in the trunk of his car – now, that is. BTW, there’s gonna’ be a moratorium on gas stations in the town where I work – seems like every development proposal is for something that has to do with the sales, service, rental, cleaning, and modification of moving things with internal combustion engines, and the elected officials don’t plan on their fair 'burg becoming the next Winter Garden.