Used it today - pretty good, although it's hard to imagine how you can be going 100 for 3/4 of an hour and still not be out of Melbourne. Took me that long to get to Greens Road, Dandechong South.
Be interested to see what the traffic's like once the school hols are over.
It's a shame I won't get to use it as I don't live on the route, which is typical because no roadworks ever happen to us folks in the south of Melbourne