"And it's probably a lot easier and faster to prove that a titanium box can contain a battery fire than it is to prove a battery won't burn. So the box may be the fastest way to get flying."
Are you serious???
Before the 787, when was the last time an aircraft battery caught fire? Nope? I can't remember one either.
Two scenario's here, either the design and implementation process is flawed or the battery technology is insufficiently proven in an aviation environment.
Boeing need a solution but redneck engineering isn't it, you might get the planes flying but you then have to convince your business partners, who then have to convince their passengers.
787F anyone?