The Senate Finance Committee's leaders, chairman Charles Grassley (R- Iowa) and ranking member Max Baucus (D-Mont.) have both pushed various enforcement and loophole closing measures.

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Plus, the fan who creates the highest-ranking Doritos or Pepsi Max ad will win a guaranteed contract to create an additional ad for the two brands in 2011.

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Max Baucus, D-Montana, the ranking Democrat on the tax-writing Finance Committee, said the senator is entertaining the idea of backing a "rolling tax cut" that would provide a larger, quicker tax cut over the first few years, as opposed to spreading it out over 10 years.

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Additionally, initial sales data show that C-Max is stealing hybrid sales away from other brands at an impressive clip: Its conquest rate is about 64 percent, with Prius and the Honda CR-V ranking as the top nameplates abandoned by customers in favor of C-Max.

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Grassley, who crafted the bill with the committee's ranking Democrat, Max Baucus, D-Montana, reminded his colleagues their bill reflects an evenly divided Senate where neither party's legislation can pass intact.

CNN: Senate poised for tax bill vote