I am currently planning a road trip for August 2011. It will be two people starting in central New York. We want to try to hit some combination of Badlands, Mt. Rushmore, Yellowstone, Grand Canyon, Mesa Verde, Rocky Mountain National Park, and back to central New York. That would be the tentative order. Is this reasonable for a 3 week trip or too ambitious? We obviously want to be able to spend some time at each place, and could cut certain places out to more thoroughly experience other places. Thank you in advance for responses.