Johnny, that's a scrap piece of 1/4" Masonite board that was painted with a can of car trunk spray paint. It does look quite a bit like pavement doesn't it? It is stained with drops and splatters of highly thinned enamel to simulate oil stains. The "tar strips" are fine drafting tape and the yellow lines were masked off and sprayed with an airbrush.
The board is placed on a card table with the tripod-mounted camera set at scale "eye height". The model and the board can be moved and turned to get a variety of perspectives and poses. I think photographing my models in natural light, and in a natural setting really helps.
http://cs.finescale.com/fsm/modeling_subjects/f/2/t/162199.aspx?sort=ASC&pi240=1