Daniel Rothberg for ProPublica and Dayvid Figler, City Cast Las Vegas ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published.

Elon Musk could be the one to make talks of a transatlantic tunnel become a reality, according to a megaproject expert. A tunnel between the U.S. and Europe has an estimated price tag of $20 trillion but Musk has claimed his companies might be able to build the structure for a fraction of that cost.

Elon Musk’s Boring Company is constructing a planned 68-mile tunnel system beneath Las Vegas where drivers will ferry passengers around the urban core in Teslas. ・Less Regulation: Despite its size, the project,