GAINESVILLE, Fla. – As a solution to Miami’s notoriously congested traffic, Tesla Inc. founder Elon Musk is proposing to dig tunnels with The Boring Company, one of his many business ventures. “It doesn’t seem very smart and it is certainly going to be expensive,” said Kurtis Gurley, a professor of structural engineering at the University of Florida. Gurley said one challenge of the project would be keeping water out of the tunnels while shoring up its walls. Felice noted that engineers earlier this decade completed the 4,200-foot (1,280 meters) Port of Miami Tunnel, which had a price tag of $668.5 million. The Boring Company burrows utility and freight tunnels under cities to alleviate congestive traffic and shave down transportation times.