Relatively new to the US, and US tax rules, I'm wondering how the tax credits for electric cars work.

- Is it possible to claim multiple credits (buy multiple cars) per year ? (does it depend on filing jointly/separately, and is there a total monetary limit ?)
- When is the deadline for purchase for claiming a tax credit for FY2012 ?
- Are there any requirements for how long the car must be in your possession to claim the tax credit ?

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- 2007 BMW 335i E90, AT ( I'm lazy and it's a good auto ), sport, prem, nav, ++