In DC, a lot of the luxury vehicles are provided by corporations, almost all of whom are sited in/around DC to exert influence on the government. So the people

In DC, a lot of the luxury vehicles are provided by corporations, almost all of whom are sited in/around DC to exert influence on the government. So the people making these sorts of rules will not be affected by them, and they are just making a moat around the luxuries that they want to enjoy so that they have status over the common folk. Kind of like politically connected and wealthy people wanting to get rid of gun ownership. They will still have armed body guards provided by the state or that they pay for.