Painting an industrial theme

This steamroller formed an appealing subject for an oil painting outdoors, although difficulties emerged.  One had to paint quickly, because the shadows crept across the metal skin as the sun moved west through a winter sky.  And the whole painting appeared much lighter once I had gotten it inside; brilliant sun can cause a misjudgment of values.  Turpentine-rich brushstrokes suggest rust.  The collector has framed it in a rather ironical, very sumptuous setting.