Courts will divorce you even if your spouse doesn’t agree to divorce. Him not agreeing doesn’t mean you must stay married. People aren’t held hostages in their marriage if one person wants a divorce. Times when people objected to divorce and it held power, are over. Judge will divorce you. Sure he might not want to do anything about the car. Judge will decide on that. Sure even after court order, people might drag their feet just to be nasty, he might take his time. If he is the type to be nasty about the car situation then I don’t think it matters if you serve him at home or in public. Just do what feels safer.