Selling the car ahead of time and maybe getting another vehicle outright with no payments is the way to go. If you let the car go back to the financier your credit rating will take a hit and why not avoid that? The sooner you do it, the sooner you can stop that car payment and hopefully be able to put it aside for when your job ends.

I'm sorry things have been so tough for you and doubly sorry that the future looks so grim. Please take control of what you can and fight! You haven't come this far to land on your head and give up. Fight!