Just to offer a little perspective...
When listening to someone play, it sounds faster than it is. Fills, tempos in general, whatever. If you've ever listened to a recording of yourself playing - particularly with a band - you have unbdoubtedly experienced the 'hmm, it didn't seem that fast when I was playing it' syndrome.
So, when hearing Weckl burn around the kit, the first thing you need to understand is that it's not impossibly fast. Chances are, your hands already move at that speed - you just don't realize it - and any practice needs to be devoted more to accuracy and precision while moving around the kit. You may indeed also need to work on speed, but realize that you're playing faster than you think, and don't agonize over it or feel that it's unattainable.
Basically, Weckl is just a guy moving sticks around, just like you and me. The difference is, he does it really well! But with practice, we can do some firweworks too. We just need to dedicate ourselves and practice the way in which we move the sticks.
Bermuda