Not just the dollar, RBA says of Holden RBA governor Glenn Stevens says the Australian car industry has more challenges than a high dollar. RESERVE Bank governor Glenn Stevens has bought into the debate raging about Holden's decision to cease manufacturing in Australia, saying the car industry's challenges are not just about the exchange rate. US car giant General Motors cited the relatively high value of the Australian dollar as one component of a perfect storm that had made its local operations unsustainable. Mr Stevens said the exchange rate is not the only issue for local car makers. "The Australian car industry has been in structural change for quite a long time, at many different exchange rates, including ones much lower than we presently see," he told The Australian Financial Review on Friday. It was going to be "a tall ask" for any manufacturer to share a small portion of what was a pretty small market if it was not part of some bigger global chain. With a falling terms of trade, Mr Stevens expects the Aussie's dollar's natural level to be lower than its overnight rate of US89.40 cents. I thought [US]85 would be closer to the mark than [US]95 ... but really, I don't think we can be that precise. If things over the medium term evolve as the bank is assuming it would be surprising if "a nine at the front is the right number."