Thursday, for the surface of the steel bar. The car fragment is big enough to identify the subject and to show clearly the nature of the situation. But the keeping element is the steel surface. The light on the car´s hub cap is great too. The two metallic shining surfaces bring a good contrast to the streets gritty, scratched surface.
The light in the Thursday picture brings life to the surfaces but doesn´t compete with the forms and textures. The shadow in the Friday picture is a subject of its own.