You got any background on this one Housey? I'm guessing it's an Audi publicity shot but I can place a couple of the cars to the rear.
The front row are the three Crossthwaite & Gardner recreations - the C Type, the C Type Rekordwagen and the 39 D Type. I think the right hand one in the middle is the restored Karasik '38 D Type and a wild stab at the left hand one would be the original C/D hill climber from Riga.
That leaves what looks like another C Type at the rear but I'm not sure where that's from. Allegedly there's one in the VAG museum but I'm not 100% sure that it's a different one from the front row C type.
EDIT: Got the middle row round the wrong way - just spotted the double tyres on the right hand one.