The original plan was for Oshawa to build not only the Camaro, but also the new rwd Impala, which is gone. That is an important plant to GM so much so that when th ef-bodies went ouyt of production the union got GM to agree in writing that any new f-body (Camaro or Firebird by name) had to be built there. Camaro alone will not keep the plant at max capacity so expect something else to still be built there. But the planned production #s for the G8 are necessary for stability in Holden, so I'm not so sure that any G8 production will leave Oz.