the solar glider airport. three major airports fit on the spine. it glides at the exact speed needed to remain directly under the sun. it glides above cloud level so its always receiving energy from the sun. planes can take off from the ground and deliver people or cargo to the glider and immediately land where they took off from. the glider then carries the people or cargo most of the distance around the world for a small fee and another plane takes them down to whichever airport is there destination. leonard spencer's genius at work again saving on energy costs and benefiting the world. the "bag of letters" the love letters HIM never sent to America are caught on the wingtip where eVe finds them 3000 years later.