This is a procedural question best asked to an attorney in your area.  Generally, obtaining a judgement of any kids by default may not necessarily stop a person from being able to attend a trial on the "damages" of the matter.  They have only given up their right to contest the actual severing of the marriage.  And is some states courts can not decide the issue or distribution of marital property where an order granting adivorce was based upon a default.  It is my understanding that in he state of Florida a divorce that is granted based upon a default is considered an uncontested divorce and that the matter is set down for trial sometime within the 90 days thereafter.  As for the car, even though it was titled in your name only if it was purchased during the marriage then it can be considered marital property.  Get help here.  Good luck.