[mywittyname]

Car dealerships exist in what is probably the most favorable regulatory environment of any business. It's a side effect of owners of car dealerships often being the wealthiest people in a locale, and being politically active. If you look up donations to your local and state politicians, you'll probably find several of the largest donors have last names that happen to match that of the local Ford or Chevy dealership network.

They have rules that protect them from competition from manufactures, rules that protect them from them from competition from other dealerships (i.e., Ford can't allow a dealership to open across the street from one they don't like), in many states, there are special rules for inheriting a dealership.