3D Effect how to create this motion effect?

Hi, This is my first post.

On Brad Kremer video  Hayaku: A Time Lapse Journey Through Japan,

https://vimeo.com/12112529 at :22,

What is the technique effect use at :22 (men in the street, background is moving but not the front subject)

Is-it a new 3D effect with Photoshop or Afrter effect.

What is the name of this type effect.

Could we find some tutorial on Adobe.

Thanks for whatching and respond

Pierre Fontaine