The art project "Momentum Wehrhahn" is an interpretation of the Düsseldorf subway "Wehrhahn Linie" and deals with art in public space. It was created from the inspiration of light, art, dynamics, and space. With his technique – Reflection-Art-Photography – Nik Pichler creates a fusion of traffic, people, art, light, dynamics, and space. Reflecting surfaces in architecture become backdrops of the motif and create a visibly impossible connection of the most diverse realities. It represents an underground world that combines traffic, people, art, light, dynamics, and space. They inspire people and invite them not to accept the everyday, but to reinterpret it again and again.