Transportation has fundamentally reshaped society by collapsing the barriers of distance, enabling the rapid exchange of goods, people, and ideas across the globe. Historically, the invention of the wheel, the steam engine, and the internal combustion engine each triggered massive shifts in human organization. The railroad and steamship facilitated the Industrial Revolution, allowing raw materials to reach factories and finished products to reach distant markets, which created the modern global economy. In the 20th century, the automobile led to the rise of suburbanization, changing the layout of our cities and the nature of family life by allowing people to live far from where they work. Furthermore, commercial aviation has turned the world into a "global village," where international travel and cross-cultural exchange are accessible to millions, fostering a more interconnected global culture. However, these advancements have come with significant social externalities, including environmental degradation, urban congestion, and a reliance on fossil fuels. Modern society is now at a new crossroads, where the transition to electric, autonomous, and high-speed rail transportation is poised to once again redefine how we live, work, and interact with the planet in the 21st century.