Hi,
My deepest sorrow, yes U can file case against him. Provided that you have to proof that the cheque he gave you instead of cash from his own account. I mean the Current account should be under his name. Then definitely you can recover what ever the amount under faradism. Go to the police station with an Arab national (may be a colleague who work with you who can speak English & Arabic), and log a complain.

Have you changed the ownership of this car to that person?