Whether you've already created a Google Plus Business page for your dealership or plan on doing so eventually, here's two simple things you can do to help make sure it stands out. One is for esthetics, the other for search.
G+ Business pages allow for a profile image and five window panes to display images from your scrapbook. Why not dress it up a bit?
Use this tool to create custom profile images with G+ banners, logos and landscape shots for the window panes: Make Google Plus Banners
Once your page is set up, be sure to add a link to your site in the about page. You'll need a link on your G+ page pointing to your website and then from your website back to your G+ page to complete the loop required to have your page indexed properly and included within Google Direct Connect. (G+ Pages don't have custom URL's)
You'll also need to confirm ownership of your G+ page by adding a short snippet of code to your website. Just as Google created the new "author" attribute for individual G+ pages, they also created the "publisher" attribute for these pages.
Get the proper attribute information and the G+ badge code snippet here: Google Webmaster Tools - Google+ Pages
I hear a lot of people wish they had set up their other social properties much earlier. (Facebook, twitter, LinkedIn) - here's your chance to plant a few seeds early.