Cramdown is most familiarly known as a tool to decrease monthly payments on vehicle loans. But you can also cram down debt on other collateral.
Cramdown lowers vehicle loan payments and the total paid on the loan. But you can also get similar benefits on other personal property debts.
Here's an example of vehicle loan cramdown that shows how you can reduce your vehicle payments and be free and clear after paying less.
Saving the vehicle sometimes is not the best option, so Chapter 7 bankruptcy gives you a safe way out.
Chapter 13 protects you while you catch up on your vehicle loan, or you may not need to catch up on that loan at all.
If you are buying something on time and want to keep it, you often can do so for less money IF you bought it more than a year ago.