I have been working on my credit for the past few months. I have added myself to my husbands credit cards as an AU and gotten a couple of cards withthe shopping cart trick as well as a best buy rewards credit card. My score on here is 621. Just this week I have made arrangements to rehab my student loan. The only baddie I have left isa tax lien for 60k from 2009. Is there anyone that has a similar situation? I am curious what my score might increase to in 9 to 10 months when the rehab is complete and the student loan derogatory info is deleted? I need to buy a car asap and dont want to deal with a subprime lender. Any guesses are appreciated!