Apparently, Warren Buffett suggested to BNSF that they should stop hedging diesel: "Well, when we buy the Burlington Northern, they're hedging diesel fuel. Now what I tell them is I wouldn't do it if I were them, but it's entirely up to them ... I tell them: if they really don't want diesel fuel on the market, we'll just close up the railroad and then all trade diesel fuel all day, you know."
(This was in his interview with the Financial Crisis Inquiry Commission last year, a transcript of which only began making the rounds a couple of weeks ago:
http://www.santangelsreview.com/2011/03 ... -the-fcic/ )
That's a very tangible benefit of not having to worry about quarterly earnings. The other railroads are paying Wall Street a tidy sum for the privilege of smoothing out their earnings with derivatives. BNSF doesn't have to. They have permission to let their earnings fluctuate with the price of diesel.