For all you experienced road trippers out there...What are some must-see attractions that you would would recommend I visit with my buddies? In June we're going from Seattle to New York and we want to make sure we're not making any gross oversights in our itinerary. What locations would you guys suggest that are fun and exciting to visit (or just absolutely necessary). It could be in New York or Chicago, since we're stopping in both cities, or anywhere in between. Thanks for any suggestions!