Maybe it will be used to fund new tunnelling and/or bridge technologies - the current government seems surprisingly keen on connecting NI to Scotland....
The comment is making fun of a proposal Boris Johnson once made about building a bridge from Scotland to Northern Ireland, which is considered borderline physically impossible as far as I understand.
Tunnel, no. It’s very feasible and practical from a civil-engineering perspective, but the economic value of a road connection between NI and Scotland has not been demonstrated to outweigh the economic cost of its construction.
Even more fun: the relevant area of sea has had one million tons of explosives dumped there as well as chemical weapons and even some radioactive waste:
What’s feesible? The tunnel or the bridge? I’d heard the tunnel wasn’t possible due to the particular geography of the channel. But a bridge? Now that I’d be interesting I seeing. There used to be a giants causeway across there in mythical times ...
The bridge is unfeasible because the channel is around 200m deep in places which makes it crazy expensive. I also found a couple of references to nuclear waste in the trench, but that might have been for another site.
Both of which I was aware of but I heard that some kind of suspension design would work. The tunnel is infeasible because there’s a very deep trench there, and that as you mentioned is filled with all sorts of nasty stuff.