I don't think anyone ever watched a video like this and thought... "this needs more barrel rolls".

Too bad some of that is speeded up.

Look for traffic out on the roads outside. Some of it is 1:1 but the really fast stuff is cheated.

Can you give an example of this? I can't seem to find any specific area where traffic looks abnormal.

I'm with @sheppard. Can you show me where you think it's sped up?

It doesn't make any sense to me that you would speed up the video for the outside sections (i.e. where you can see the traffic), that's the easy bit where you can fly as fast as you want.

Maybe the 60fps framerate makes it look faster, but the traffic looks fine to me.

I apologize. I've looked at the two points I thought were sped up and realized the cars in question were massively speeding. The bus in one was a regular speed but there's a white sedan that is, in my local vernacular, "really givin' 'er".