+1 boothy about MWM, they even said about the GM DP in June but when i mentioned it on iracing all the americans said it was a rubish idea that always got rumoured.
if you really what to know what audi think about porsche coming into the WEC, listen to the radio lemans imola practice pod casts, apparently there were blank faces in the audi pit when they were questioned just after porsche announced it followed by a lot of frantic phone calls, apparently porsche really did keep it completely secret from everyone else in the VW group and even porsche US as it was felt they were too closely linked with audi US to be trusted.
it helps of course to have a member of the porsche family, DR piech as chairman of the VW group and of course it's still not entirely clear who exactly owns who / what in the relationship given that in theory porsche holdings has a slight majority share in both porsche and the VW group even after porsches financial colapse and as such will be the majority share holder in the merged group, and who owns 10% of porsche holdings? the piech family