Mercedes-Benz has the A-Class E Cell, sold only in Europe, and the B-Class F-CELL, but plans to debut the SLS-AMG E Cell in a battery electric version by 2013.

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"The fact that some airlines have received A's and B's and others D's and F's on this report card also shows that providing decent customer service and avoidance of strandings is both achievable and should not place an undue burden on the airline industry or lead to higher ticket prices, " the report's executive summary said.

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For the Hedged Equity Fund, portfolio managers will take long positions--the outright purchase of equities--primarily in stocks that have ratings of A or B and short positions primarily in stocks that have ratings of D or F.

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Internal Revenue Code Section 6015(f) provides that where a requesting spouse does not qualify for relief under Section 6015(b), the IRS may nonetheless relieve her of liability for the tax deficiency on the joint tax return where it is inequitable to hold her liable for the tax.

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