You need to sell it, but the main problem is that it is an old car, and the chances that you will find a buyer are very low. You are a lucky person if this car is insured because the insurance will help you to get the money from this car. I used this method with my old van. I paid some people to crap it all around in a place where there is n camera, so I could call the insurance company, so they would pay me for repairing the car. Usually, they can propose selling them your car with the price they estimate it, and in this case, you should agree with them and get the money.