As previously mentioned, vehicles help us get from one place to another and thus frequently represent our ministry or life's purpose. A "dealership" is both a place where someone goes to buy a car (vehicle) and/or to have it "authorized" service and/or repair work done. A car dealership will often represent a ministry or purpose that is intended to help others to both find/obtain their "calling" and insure it continues to function properly.
* Symbol meanings provided by www.mydreamstories.com should not be used as a dream dictionary. They are for reference only and both dreamer and interpreter should be careful to listen to the voice of Holy Spirit as to what any particular symbol means in any specific dream.