I filed chapter 7 in May 2007. It was discharged in August.
I received a letter in the mail from a lender wanting my business stating "Once a bankruptcy is filed all open lines of credit including but not limited to AUTOMOTIVE loans stop reporting to the 3 major credit bureaus. This means that if an auto loan is carried through a bankruptcy it is no longer being reported that payments are being made every month, however the payments made do, in fact lower the balance but are just not reported."
I did reaffirm my car loan in my bankruptcy.