Yeah, tricky corner that one. Starts gently enough but tightens in on itself, before opening out to the right-hander.
AIPP is a very professionally run event, which certainly helped the record. The Murray Bridge circuit is quite fast anyway, which is also a major factor. Wonthaggi by comparison, is a much tighter & more technical track. The course record there for 24 hours is "only" about 864 km.
For the record, there were no safety car interruptions for this race!