Perhaps no field has experienced the revolution in velocity more acutely than transportation. We look at five blazingly fast technological marvels that have pushed the speed limits to the very edge, each with its own unique and dramatic history: the world's fastest production car (Sweden's Koenigsegg CCR); the world's fastest train (the Maglev in Shanghai); the world's fastest boat (The Spirit of Australia); the world's fastest roller coaster (the Kingda Ka) and the fastest thing on earth (the Holloman High Speed Test Track), used to test highly sensitive equipment for many branches of the government and commercial clients.