Do yourself a favour and never ever ever ever ever ever ever aim to play like this guy. Quick? sure... but what else is it?
I haven't seen too much faster than this guy, but i've seen a few other videos of people playing similarly quick stuff (some with a bit more musical value, some with less, some with more tricks, some with funnier facial expressions, etc). And almost all of them are emotionless, a few slow notes followed by a run of ridiculously fast notes. Watching these videos does make the jaw drop for a while, but it's a sport rather than music.. i would quite simply be completely embarrassed to play like that.
Considering that you're on a Dark Tranquillity board i'm sure you realise that music is about expression.. how much expression can you get into a note when it lasts for such a tiny moment? Did this guy's playing make you feel anything other than amazement? The true masters are those who can take a slow run of notes and truly express what they're feeling. It's the subtleties that are important, complete control over vibratos, slides, bends, dynamics, etc etc.. and quite frankly this guy sounded fairly bad whenever he played slower stuff.
Speed in some circumstances can add a new means of expression, but it's use as an artistic tool is very limited and in my honest opinion the effort to get that fast is far better spent on learning some song writing skills or such.
And hmmm, from the videos of this guy that i saw he didn't seem to be good at much at all, im not sure if a guitarist like Vai is quicker than this guy but Vai is certainly doing a LOT more interesting things (like playing entire solos using the whammy bar... and, well everything).. this guy doesnt even get close to competing with Vai.
there's my $0.02