This is exactly what I was looking for! How long within registering the LLC can I open the bank account and all that?

once you get the paperwork in the mail. depends on which online company u go with and what state you register in. there's a little bit of reading you have to do.

once u register, you'll get a LLC Certificate with ur company's name on it in the mail. it usually takes a week or two. again, there's reading to be done about what states allow you to hide your name/address if u dont want it to show up in the public records. if it doesn't matter to you, then any state will do, and go with the cheapest one. then you gotta get a TAX ID online (don't pay anyone for this, u can get it on ur own for free in 3 minutes)

once u get the LLC certificate in the mail, you can go to any bank and open an account by showing that certificate and tax ID. (i'm not sure, but you might even be able to open an account without the certificiate, and just the tax ID and identification... but call your local banker to ask). bank of america is probably the easiest bank to work with.

Also, can I use this for verification even though it will show that my account/LLC has only been active for a few days? I need to get this car as soon as possible.

again, it depends on what kind of verification people are looking for and how deep they dig. they have to check the state secretary's site to be able to see how long you've had the LLC for. do u think ur car dealership is gonna do that? i can't answer those questions.