There is hope after all that interstellar space travel will be possible. May be not in our life time but the we don't live for the now do we.
Faster Than the Speed of Light? gives us hope.
There are naysayers of course but then we wouldn't be geeks if we didn't fly in the face of the impossible.
I would be interested to ask (and I'm sure that most of those who have taken the time to read this will know what I'm talking about so I'm not going to explain it), what difference these scientists would see between warp drive and folding space. Because it does sound to me like they are contemplating that latter much more than the former.