Yeah, that came from a quote from Iger when he got to preview the attraction last year:
“It felt so real, so lifelike,” Iger said of the prototype vehicle guests will board to travel through the fictional land. “There’s never been anything like it.”
The article in Variety then goes on to say....
"The vessels that guests will ride upon will essentially be the banshees themselves, with bodies that move to mimic a breathing beast. The flying sequences will be brought to life through large video screens — similar to “Soarin'” — with vehicles moving with the
3D action inside a massive theater."
I have no idea how they will actually pull this off, which makes me really hope that they find a way, because that is what I have come to expect from Disney Imagineering, provide an experience I never could have imagined.