The Tatra T3 model is made by Natiq Aghayev.
Take a look at this awesome sci-fi tram created by Natiq Aghayev in 3ds Max, Substance 3D Painter, and Octane Render. The project is a futuristic take on the Czech Tatra T3 tram.
According to the artist, the model was created some time ago in 3ds Max, then textured and rendered as part of "learning some cool procedural stuff" in Octane Render.
Here are some other works from the author: