If some one is suing you, they must file a Complaint in a local court and have you served with a Summons and the Complaint. If that has/does occur, turn those papers over to the insurer for the vehicle your son was driving. Depending on the policy language and the facts of the incident, they will hire a lawyer and defend the claims, or let you know they are disputing coverage and must file a Motion with the Court to settle the issue of whether they have a duty to defend you. They would have to serve you with such a Motion. You have the option to hire your own counsel if they are disputing providing a defense or if the demand of the Plaintiff exceeds the policy limit of the insurance. If there is some question about whether the insurance company is being "straight" with you, ask them to put their advice, disputes, etc. in writing so it will be clearer to you. You can then take their position to an independent lawyer that you hire to give you advice as to your rights. Generally you are not responsible for the actions of your son, but if you were the titled owner of the vehicle he was driving, then you have liability as the owner. Certainly anyone suing must also prove that their injuries meet the requirements of Michigan law, and any insurance lawyer defending you should explain all this to you and if the Plaintiffs injuries don't meet the legal requirements, they should file a Motion to Dismiss the case.
Answered on Jun 04th, 2013 at 10:25 PM