The second car is still black, but until Audi releases some press photos of the R15(which with Paul Ricard around the corner should be soon), I stand by what I've gathered, that it's a stylized version of the German flag inspired by the 2008 Audi R10 design with splashes of silver mixed in.
It could be used just for the test, but we'll find out by next Friday, which also happens to be the 20th birthday of a certian someone named Kristen Stewart(odd random fact).
And since I forgot to post it last night, here's the black 2 R15: [ame]http://www.youtube.com/watch?v=ytIV6fSVkX0[/ame]
And a longer video that was just recently posted from the same test: [ame]http://www.youtube.com/watch?v=RaOLIKe5Cx8[/ame]
NOTE: Upon seeing the better quality video(the second) I posted, it seems like maybe these are camo paint schemes that use broken up colors to confuse people at what they're looking at so(at least while the car is moving) that someone can't judge certain things until later on. Also, the #2 also had some silver and red on it.