Light Painting + Motion Blur?

[AlejandroGomez]

Hi guys,

 

Im really wondering how this video was done, has anybody any ideas?

 

 

Specially btwn 2.40 and 2.50.

 

Thank you guys!

[David Mullen ASC]

The exposures are so long that I suspect this was shot with multiple still cameras, maybe two or three or more in a short row, enough to create that side to side motion. Sort of a simpler version of a bullet time array.