[helierez]

And on the subject of tax withholding on the year you buy your volt, if you have an option to contribute to a roth 401k (after-tax) rather than standard 401k, consider it. Contributing "before tax" reduces your taxable income, so if you fall under that $7500 threshold, you are loosing the difference. So whatever I put away this year into roth 401k is considered after tax, even though my tax bill will be near zero thanks to the credit. When I retire, the money I put in my 401K and the interest on it will be considered after-tax.