First thought: it's worth taking a step back and noticing that the gas tax pander didn't work. At least, it's hard for me to believe that Obama would have come as close as he did to winning Indiana in the face of the flap over Rev. Wright, the possible involvement of Limbaugh Republicans, and so on, if the idea of a gas tax holiday had really caught on.
Senator Clinton gambled on the stupidity of the voters, and she lost. That is truly worth celebrating.