A proposed $20 trillion Transatlantic Tunnel could connect London and New York in under an hour using hyperloop technology traveling at 4,800 km/h. Still in concept, the project faces immense engineering, financial, and logistical hurdles. While hyperloop trials advance in India and China, experts predict this ambitious vision may take centuries to materialize.

Source:  https://economictimes.indiatimes.com/news/international/global-trends/london-to-new-york-in-one-hour-a-20-trillion-tunnel-could-make-it-a-reality/articleshow/116396169.cms