If you have been paying a loan for more than 910 days, and if you file for Chapter 13 bankruptcy, the bank will allow you to receive some relief for that loan.
For example, if you have been paying your car loan for more than 910 days, not only will you be able to keep your car, you will no longer have to pay back the entirety of the loan. If you have been paying your car loan for this long, your car is no longer worth what you owe. You will only have to market value of your car. This is called the "cramdown" rule.