A few quick thoughts on structured markup, since it's been on our minds lately! Search engines still don't seem to be using data markup for dealer sites, but if they ever do (we're betting on it), then you'll want to at least have a thumbnail tagged correctly so that it will show in search results and make your vehicles stand out.
Was that just Greek to you? We'll break it down: Data markup is something that's been in Google search results pages for awhile. You've probably seen it when you've searched for Yelp reviews or online recipes.