Just to expand on this a little, because I'm on the topic and I love being excessively pedantic - I want to stress the importance of statements versus actually mechanically done things in feats.
So,
let's quickly look at the feat where Flash evacuates a city mid nuclear explosion.
The key thing I want to highlight here is the contradictory information given by the narration.
"At 13:57 and 0.00001 microseconds, half a million Koreans seem to materialize on a hilltop 35 miles away from the blast. They were carried here. One at a time, sometimes two, at a hair's breadth short of the speed of light,"
Now, if you've been paying attention to my breakdown above you'll be thinking that this is some pretty suspect narration. The issue with using this feat is how we interpret it and look at the information we are apparently given.
Let's start with stated timescale. Flash is stated as having achieved this feat in 0.00001 microseconds. This is 1/100th of a nanosecond or 10 picoseconds. The fact that Flash is covering more than 3.33 millimetres in 10 picoseconds means /he has to be going quite a lot faster than the speed of light/ as the narration would have us believe.
Second, the distance covered versus his stated speed. Flash is said to have been going "just under the speed of light," Based on my calculations, ignoring the fact that he did some of them in twos, Flash would have covered 35 miles (at most) 532,000 times which is 59,931,821,600 metres (Almost 60 billion metres). Obviously the true number is a bit lower but it's a fairly round number so it makes calculation easier.
The speed of light is 299,792,458 metres/second which means to run that distance at that speed would take around 200 seconds or 3.3 minutes. So the speed measurement again is categorically wrong even if we ignore the stated timescale because nuclear bombs take less than 3.3 minutes to happen and Flash managed to get everyone out before the bomb went off.
OR DID HE...?!
Another issue is the sequencing of the art and how explosions work. The bomb went off "at 13:57," and we can see in the art that the explosion has already occurred even though there is no one on the hill. If the three panels are showing the progression of the explosion, all the people should already be there on the first panel because the light from the explosion has travelled far enough to see from 35 miles away.
From the instant the bomb went off, in ten picoseconds, the light and radiation of the bomb explosion would have travelled 3.33 millimetres. The pressure wave and the mushroom cloud are relative eons away because they don't move at lightspeed. For people to still be appearing while the mushroom cloud is building, which the art clearly shows, technically
Flash actually failed in doing this feat as described.
This also invalidates the timing listed because we can see things happening in way more time than the stated timescale. It's nuts.
So, what's my point here?
Honestly, not much. This feat is very cool but it's definitely one of those ones where, if you look at it for about a minute you go "Wait, what?"
Were I writing the feat, I would sequence the art differently, have the stated timeframe a little higher maybe have it like... 15 - 20 nanoseconds or something (0.002 microseconds) and just say it was generically "faster than light,"
Thank you for coming to my TED Talk.