I'm not a Georgia attorney, and divorce law and procedure does vary from one state to another.  For advice you can rely on, you need to talk to a lawyer in your area, who can review all the unique facts of your case.  One place to find a qualified attorney is our website:  http://attorneypages.comIn most states, the isn't likely to take your car, especially if she doesn't have a driver's license, and especially if she hasn't contributed to buying or keeping the car.And in most states, you don't have to catch them "in the act," just proving that they are living together will do it.  A good lawyer can explain a number of ways to prove "cohabitation."