So everyone's obsessed with transatlantic tunnels. Okay. But a tunnel that only goes across the Atlantic is no use, except to people in New York and London or whatever. For this to truly rock, it needs to go further. Here is my proposed route!
You could probably argue for rerouting the eastern end via Shanghai and Seoul. The European bit should go through Berne or Zurich, but i forgot and don't know how to make Google Earth add points to a ruler path.
SA, Lilongwe, Nairobi, Adis Abeba, Cairo, Istanbul
New Delhi, Mumbai, Cochin, Colombo
Nairobi, Kampala, Lagos, Abidjan, Recife, Brasilia, Sao Paulo, Buenos Aires, Santiago