"Avengers: Age of Ultron": Concepts for Quicksilver's trail

Some of my concept works for "Age of Ultron"

Paolo giandoso ap trail 01 vp005 city

Concepts for the silvery trail marking the passage of Pietro (AKA Quicksilver)

Paolo giandoso ap trail 01 vp004 city

Concepts for the silvery trail marking the passage of Pietro (AKA Quicksilver), on black