I wouldn't do it. I almost did a similar thing previously, but decided to cancel the contract. They aren't doing it for free. You will have to pay a fee. Honeylove is right, you won't be able to get a car loan, and unless you had the money to pay for one outright, which it doesn't sound like you do, I would avoid it like the plague. You can do it on your own, just tighten your belt, I know it's not easy, but it can be done!
1) cancel cable, high cost cell plans,
2) eat at home more, less or no eating out
3) sell things that you don't use and are still in good shape or new
4) Keep your existing car in good shape by tuneups, etc. Even if it has high miles, keep driving it as long as you can! Newer cars can go for a long time, we have two with over
100k miles each!
5) Not sure if you already work full time, but maybe get a weekend or evening job, even for just a few days a week to help pay down bills faster
6) Buy store brands, not higher priced national brands
7) Avoid going to movies, going shopping (unless absolutely necessary) shop @ thrift stores or garage sales for things
8) put any future refunds (such as tax refunds) towards debt
9) Call your creditors and see if you can get your rate lowered yourself!
10) if you own your own home, see about refinancing
Hope this helps? Good luck! You can do it!!