MILAN (Reuters) - The process to choose and appoint a new chief executive for Italian luxury carmaker Ferrari will not be rushed and will take the appropriate time required, a source close to the matter told Reuters on Friday. “It will be a proper process, it will take the appropriate time,” the source said. Ferrari said late on Thursday in a surprise statement that its CEO Louis Camilleri had retired due to personal reasons after being in the role for nearly two and a half years, and that Chairman John Elkann would lead the company on an interim basis.