So I drove from Columbia, MO to near Pittsburgh, PA last week. (Nice that the 24 gallon tank can nearly take me the whole way!) As I went, I was checking fuel prices along the way to see where the cheapest place to stop the way back would be. Driving back through I made a stop in Indiana because the prices there was posted at something like $3.17. However, when I pulled in I found that the listed price was for trucks only - the "auto" diesel was $3.40 - what's up with that???

Is this a state by state thing, with some states deciding to tax less on trucks and more on cars, or what's the deal?

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'95 E300D ("Tank") - 231,000 miles
'79 240D ("Biscuit") - 197,250 miles (Sold)
'83 240D ("Ding-Ding") - 217,000 miles (Death by deer)
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"Back off, man. I’m a scientist” ~ Peter Venkman