This document discusses Hyperloop, a proposed mode of transportation introduced by Elon Musk. Hyperloop involves levitating passenger pods that accelerate through low-pressure tubes via electromagnetic propulsion and glide at airline speeds. It aims to be faster, cheaper, and more energy efficient than existing modes. The document outlines how Hyperloop would work, including its use of linear induction motors, air bearings, and solar power. It also discusses proposals to build a Hyperloop connecting Mumbai and Pune in India that could transport passengers between the two cities in 25 minutes. Mechanical engineers would play an important role in designing Hyperloop's propulsion, levitation, and other systems.