How does someone salvage cars?

How does someone salvage cars?
A salvage vehicle is one that has received a certain percentage of the vehicle's worth in damage (determined by the state the vehicle is registered in). To salvage a vehicle in most states, one must be licensed to repair the vehicles and the vehicle, once repaired, usually has to be inspected. If the vehicle is salvaged and repaired to be sold, it is the responsibility of the seller to disclose the salvage title.