Interesting
article cites claims by an ex-Boeing engineer that the Dreamliner will shatter on impact, give off toxic fumes in a fire, and will be less able to withstand a lightning strike than an aluminium tube.
Personally, I think it's unsafe to be in any kind of a crash, and would recommend avoiding it.
Can't help wondering, though, if a glass ship like the 787 would simply shatter if it hit a tall building, leaving just the small, solid heavy bits to plough on through.
Thus, the 787 might be a lot less appealing to sociopathic organisations like Al Quaeda than aluminium bodied vessels?