Simpson said Greenberg turned down the opportunity for another position in the group, one "not in the full role that he was enjoying."
Rangers CEO Greenberg leaving organization →
"The oil companies have cornered the market and they are squeezing us for everything we have," says Bob Simpson, 62, of Lodi, N.J., who pays close to $60 to fill up his Ford Escape.
Start of driving season fires up gasoline prices griping →
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