the plan calls for something the world has never seen before: a submerged floating tunnel. "Wind, waves and currents have hardly any influence there," Arianna Minoretti, a chief engineer at Norway's Public Roads Administration, She said 50 international experts "are doing detailed simulations and detailed measurements of wind speed, current, undersea landslides, bedrock geology, etc." to make sure the plans, as well as the tunnel, is rooted in "the real-world environment."