Bad news: you have to pay back all that money even with bankruptcy. W changed the way bankruptcy works so now you can't wipe out debt in bankruptcy. Instead the judge only changes the payment terms.
Messed up huh?
I don't know how bankruptcy process works exactly when it comes to notifying everyone but I'm sure the second any creditor found out your credit with them would be frozen.
I would get rid of the car too. Buy a beater for a few hundred bucks. That will save you some money.