If you want the most high performance bike ever designed, this is it. More athletes used Cervelo in the 2005 and 2006 Hawaii Ironman Triathlon than any other brand. It is also used with the professional cycling team CSC in the Tour de France. Several models and price ranges are available. The bikes are strong, light weight and designed to go the distance. This is what I ride.
When the aliens come, they will no doubt disable all of your electronics and your vehicle. You are going to need this high performance bike to elude the invading creatures. You can always use this for exercise or a triathalon before the aliens come - you'll be in shape.