GBP Guilty Bike Porn, So close to Pron

looks like mix and match ultegra/xtr di2 which i thought was impossible for the derailleurs

From the Radavist (TL;DR: It doesn't work):

I stopped by the Shimano display to ask if Panasonic had cracked the code allowing an XTR rear derailleur to play with the road front derailleur; the rep immediately wanted to go see it. Shimano rep suggested the only way it was maybe possible was if they were running some sort of split system with two batteries. We asked the Panasonic guy if it works and he kind of smiled and nodded until we went to press the shifter buttons then he kind of shrugged and said something to the effect of, "no no just for display". Shimano rep took some photos and shook his head saying that this bike on display was going to cause a bunch of headaches with people wondering if a mixed Di2 system with a mountain rear derailleur and a road front derailleur (or vice versa) works now. Long story short, it doesn't.