Write in the miles you have to drive to your job. If your income is below a certain level, you get a tax credit depending on the miles driven.
Might help during the transition period.
However I offered this in the context of the current American political situation. Reading lots of diaries and comments on DKos wailing about political suicide if the gas price won´t come down. Not to mention tax increases on gas like we have in Europe. :)
In that context a tax credit for commuting might be a good idea for a limited time. Help the "poorer" people now to gain their vote for more decisive action tomorrow.