You may be able to keep the car provided you can afford the new proposed payments in a chapter 13 bankruptcy. The new payment would be the total principal divided by month 36 to 60 with a interest rate of about 6%. You may be pay the value of the vehicle provided you have owned it for about 2 1/2 years also, which may lower you payment further.
Your credit cards are included and you cannot pick and choose. if you were representing yourself and you go the case confirmed, good job, now you need to modify to reduce the payment for which you may be able to do, provided their is money that can be taken from the unsecured. If you have a lawyer you should call that lawyer and get some help