Evacuated tube transportation

Evacuated tube transportation (ETT) is a high-speed transit system where passenger capsules travel through sealed, low-pressure tubes. The tubes are evacuated of air to minimize air resistance, allowing the capsules to glide smoothly at very high speeds with minimal energy use. Magnetic or aerodynamic levitation often keeps the capsule suspended within the tube, reducing friction further. ETT promises quick, efficient, and environmentally friendly urban and intercity travel by combining principles of vacuum technology and advanced propulsion, potentially replacing traditional rail and road systems with a faster, cleaner alternative.