What can I do with my ex's car?

Hey.

My ex husband fled the country after being fired from his teaching job. We hadn't fully started the divorce process yet though. He will not grant me power of attorney if the car, has paid the registration for the next few years, and has just finished paying for the car.

I have paid the taxes, insurance, gas, upkeep, recall appointments etc for the last year.

I'm no longer in need of the car as I'm also leaving the country.

What can/should I do with the car? I can't just abandon it, it would be such a waste of a good car. I'm lost on what to do and he's being unreasonable. Im in Virginia btw