The appropriately titled Cadillac World Thorium Fuel or "WTF" has features you are not going to find anywhere else. It runs on clean Thorium nuclear fuel and offers maintenance-free service for 100 years or more.
Not only that, each wheel is actually six individually powered wheels aligned side by side. Now that's an absurd level of redundancy you can trust. Unfortunately, this design is only in the concept stages at the moment, but if you can hang around until the year 8000 or so, you just might be able to pick one up. In the meantime, these pretty pictures will have to do. [Coroflot]