Broken hill to corner country

We are spending the last two weeks of June in Broken Hill - long story! - and are thinking of a road trip up to Cameron Corner. There are lots of posts on an earlier question, but none since January so we would appreciate an update if anyone has done this trip recently.

We do not have a 4WD, but do have a Toyota Kruger, which is a bit more rugged than most 2WDs. What is the road like?

Is there much passing traffic if we do have a problem?