Actually, I agree. The vehicle should stay impounded until the driver in question produces valid licence and insurance, and pays the fines, which also would assume that the vehicle is properly taxed.
Actually, I disagree. The DRIVER should stay impounded until the driver in question produces valid license and insurance, and pays the fines, and, if illegal, the driver should begin the prison sentence for being in the country illegally, and when completed, be deported.