Can a car company sue me for a car they don't have and I don't neither?

Debt is clearly dischargeable in a Chapter 7. The underlying Promissory Note is what creates the debt. The car lienholder can repo the car and sell it, and sue you for the difference. Or they can ignore the car and just sue you on the Promissory Note. In any case, the Chapter 7 will handle this debt. Good luck!

This debt can be put on your chapter 7 bankruptcy & if the creditor files an objection to your discharge, it would be up to the court to decide whether you might have to be responsible for this vehicle.

Maybe. Even if no one knows where the car is, the bank can still demand payment if it was not fully compensated for the entire amount of the loan. You can contact the police where you used to live to see if the car was impounded from the street. If the car was repossessed by the bank, the police may also have a record of the event. If it wasn't impounded or repossessed, you should report that the car was stolen, in which case it may be covered by your auto insurance policy. The debt can be included in your bankruptcy petition as a secured loan.

Clearly, the loan company wanted money rather than the car. At this point, you can only state your intention to surrender the car and identify where it was last seen. A bankruptcy will stop the lawsuit and the loan company will have no choice but to write it off.