It looks to me like the GIF is sped up.... or more specifically, the frame sequence likely isn't complete. It seems to progress faster than actual footage should. I just don't think it can cover that much ground that fast.
--or maybe it IS missing frames, but its not sped up, and the missing frames create an illusion of the elapsed time being sped up, but it isnt.
--or maybe it IS missing frames, but its not sped up, and the missing frames create an illusion of the elapsed time being sped up, but it isnt.