Pulling in localized traffic for car dealers or any business can be accomplished using wordpress as a CMS.  Currently I have a wordpress them being designed to use as an alternate dealer marketing site.  Not to be confused with auto dealer micro sites.  The philosophy behind micro sites as a search marketing tool with one or two page landers provides the smallest value to a dealer.

Using a CMS style mini site to push promotions or specific models and tying all of those levels of content together and having the ability to archive contnet will provide far greater value for long term SEO benefit and relevence.

Because most models and more specifically year models of vehicles come and go.  Where as a well optimized page on a domain with other layers of content can give your mini site a permanent shelf life.  For example I created a simple landing page targeting buyers in looking for a 2009 Mustang Shelby in Brunswick that has multiple calls to action and is tied in with other content about Brunswick car dealers.

The site itself is not designed specifically for a particular dealer.  It is geared towards affiliate conversions but once the traffic is monitored for a period of time it will show how well a multiple page mini site can benefit for local search traffic versus a simple one or two page automotive micro site.

Single landing page sites can be accomplished using other platforms or at very low cost.  Where as a multifaceted CMS system can be designed for set up for client management or direct marketing management at a cost that provides greater roi for the dealer.