The wheels bump along the gravelly desert and a small jolt tugs on the safety belts as the chute billows into the sky. Picture a dune buggy with a massive parachute attached to the back of it, sort of a cross between something the Wright Brothers might have designed and that flying machine from the Mad Max movies. The front end looks a little like a three-wheeled stroller, the seats set atop an angled frame behind a fat rubber wheel. The two back wheels splay out for support under the engine and a massive propeller that looks a little like an oversize house fan behind the passenger. The range of altitude and the relatively slow speeds of powerchutes provide an exhilarating flying experience, from soaring up high for spectacular views to darting along washes and riverbeds from just above the treetops. Law enforcement agencies also have used powerchutes in search and rescue efforts because the machines move slower and get to more places than regular aircraft. Stay-and-fly packages also are available with the Four Seasons Resort Scottsdale at Troon North, where guests can add to their connect-with-the-sky experience with a Celestial Picnic under the stars the night before.