Ah....you check out the WWDC in August.

Are you driving the XF? If so check google there's a site that has road trips in Michigan, RPM may know the address. Sleeping Bear sand dunes, Travers City, Crystal Lake, Light houses (snoozers if you ask me) What crops will be in? Blue berries around end of July/Aug, cherries sometime too. West coast has some great drives and small towns, the musical fountains are over there.