We already know from IGNs first look at Arkham Origins that Batman will be able to access the Batcave by using the new Batwing which has been implemented as a fast travel system, whilst in the Batcave they come across the Batmobile under some tarps half built. We can probably safely assume that the Batmobile wont feature in the game but there is always a small chance (a very small chance, miniscule) that it could be fixed. We have seen the Batmobile only once and it did serve a purpose which was to knock Bane into the water in Arkham Asylum. Wouldnt it be great to have missions where you are chasing criminals across the city in the Batmobile, ploughing through cars and using the on-board weaponry. I realise this is potentially a silly idea considering the mechanics of this game dont exactly adhere to driving but if handled right it could be a fun way to kill an hour in the game and could make traversing Gotham City all the more interesting.