balance transfer一般是说你把其他信用卡的账转过去，这转的部分你可以享受这个利息，有的信用卡也有你如果用它购物，头多少个月以内的利息也比较低的

当然理论上说，你可以用几个其它信用卡付帐，然后把balance全部转到这个低balance transfer利息的卡上去，在优惠到期之前付清或者再找一张这样的给转走，不过问题是，一般dealer不会让你买车的时候信用卡付的部分超过一定值或者超过车款的一定比例的，我碰到过的都是3、4千上限，我估计跟他们要给卡公司付费有关，你很难一辆车全部刷信用卡的。

还有就是，有些信用卡给你支票，如果那个也有低利息优惠，也许可以用，不过就我所知，这个用支票提现何用信用卡在atm上体现金，利息都是比较高的，高过购物的

here is what I have done before.

I have a credit card with credit limit 3K and 0APR for balance transfer and 0 trasaction fee for one year. The credit card company also allows me to ask for a balance transfer check that I can deposit to my bank account. So I requested such a check and put the 30K in to my checking account, paid full by check when purchasing my car. Now I only need to pay off the credit card. One thing you should be carefully is that 0APR on balance transfer has time limit, usually one year for a newly approved card. So you need to either pay the balance in full in one year or do another balance transfer when the current 0APR expires since after one year, the APR will be high, veyr likely, higher than 10%. The other thing is that some credit card companies don't give your balance transfer check that can be put into your account number. Such balance transfer can only done among credit cards. There are some ways you can actually get the cash out from such balance transfer, but i think it is too much hassle. You can learn more about this on mitbbs money board

Actually, I have another credit card that gives me 2.99%APR untill pay off, which I think is a better deal than car loans.

The cards I used are all citi bank cards. They are pretty good. you can request balance transfer check for depositing to bank account online.So you can take your time reading terms and figure out what you to do, instead of listening to those csr on the phone.