Whist it's got backers, I feel that this part of the forum maybe better suited to this discussion:
Roadshows planned to push France to Channel Islands tunnel idea
The group behind the campaign for a tunnel say it would transform the Channel Islands economically.
www.bbc.com
A series of roadshows are being held to further explore linking the Channel Islands to France via an undersea tunnel.
The idea is being driven by local entrepreneur and former Guernsey Chamber of Commerce president Martyn Dorey.
Mr Dorey has taken inspiration from tunnels that link the Faroe Islands and believes a Channel Islands Tunnel would bring economic benefits.
Having spent the past five years on the idea, he said support for the project has now gathered.
Mr Martyn cofounded the Connect 3 Million campaign to build the sub-seabed link in 2019, and the group has been lobbying decision-makers and politicians since.
The Faroe Islands to the north of Scotland have a population of about 53,000 and spent hundreds of millions of pounds on a subsea tunnel network.
A rail tunnel between Guernsey and France via Jersey would cost an estimated £5.6bn and take up to 10 years to build, according to the campaign group.