Justice League Trailer Breakdown: 28 Things You Must See
20. The Speed Force
As we've already seen in Suicide Squad, The Flash's Speed Force has been reimagined as blue lightning, which is obviously a deviation away from the comics (and the TV show, where the effects were golden).
Still, it looks good even with that change. It makes slow motion speedster scenes like Quicksilver's in the latest X-Men movies considerably less likely (though clearly there are different levels of speed, as he could move quick enough to catch the batarang without the world going all whooshy.
The trailer also shows him running through what appears to be some sort of complex, though whether he's actually heading in there is up for debate. Again, the aesthetic of the location is very much grim chic.
Nice metaphor of the sun trying - and failing - to break through the clouds...