The Neiman Marcus annual Christmas Book always has pricey stuff — but this year's is a little out of hand. Among the gifts is the M400 Skycar prototype ($3.5 million), the world's first personal vertical takeoff and landing (VTOL) aircraft designed to be used as reliably as a car. It travels at 350 miles per hour and gets better gas mileage than most SUVs — 21 miles per gallon. And since it runs on alcohol, which is a cleaner fuel than gasoline, it's also safer for the environment than your Hummer. Oh, and the buyer must clear regulatory requirements, including International Traffic in Arms Regulations and Federal Aviation Administration authorization.