Proposed 19,000,000,000,000 tunnel could get you from London to New York in 54 minutes

Imagine stepping on to a train in London and arriving in New York just 54 minutes later. Although that might sound like something straight from the pages of science fiction, this is exactly what a proposed Transatlantic Tunnel claims it could achieve. This Elon Musk-backed concept could allow travellers to complete the 3,400-mile (5,470 km) journey in less time than many people's inner-city commute. But that convenience comes at a serious cost, with the estimated price tag reaching 19trillion ( 15trillion) - over five times more than the UK's total gross domestic product. Musk recently ignited renewed interest in the idea by claiming that his tunnel-digging company, The Boring Company, could complete it for '1000-times less money'.