Dynalifter Floats Like a Butterfly, Lands Like a Plane | Autopia | Wired.com.
He sees the technology taking the middle ground between cargo ships and jet service — faster than a boat, cheaper than a plane.
“They travel at optimum at about 140 knots,” Rist said. “As they get down to 80, you can save that much more fuel because the more the helium takes over.”
He said that intercontinental delivery times would be comparable to second-day air service, with a transatlantic crossing taking as little as 23 hours.