OpenStreetMap is in the upper left. Google, Bing, and MapQuest are all represented by comparison.
Here’s the link to the above map so you can compare for yourself! Who knows, by the time you check it out, Google may have caught up! 🙂
By the way, I’m the one who first modified the McCaslin DDI interchange on OSM. It has subsequently been refined by others.
Also see most recent Osophy.