Birmingham Live World's longest tunnel will slash six-hour journey to 40 minutes
The Bohai Strait Tunnel in China will stretch 76 miles and cost over £20 billion, slashing the journey between Dalian and Yantai from six hours to just 40 minutes
The Bohai Strait Tunnel in China will stretch 76 miles and cost over £20 billion, slashing the journey between Dalian and Yantai from six hours to just 40 minutes