I can see both ways if I focus hard enough. But it looks more like spinning fast. You sort of have to let your brain get tricked into seeing back and forth.
1
Anonymous9w
That ride would suck if it shook
1
Anonymous#210w
If you look at the gaps in the blue lights, it appears to be oscillating. The gif’s author probably uses too few frames to reach a smaller file size, instead of creating a perfect loop