Full-res:
http://www.lemans.org/wpphpFichiers/..._mans_2012.jpg
Idea is one of the better ones from recent years, but still a bit amateurish because the Audi is a render, but the Toyota is a real photo in not so great quality (see the full-res version, how will that look in a giant poster?). Would be better if the Toyota was made to look more like a render or drawing.
If more matching photo of TS030 was not available, why not go for a vintage style then?
http://i.imgur.com/A3rq1.jpg 