A good investment? The Eastern Distributor, a 6 km tollway, completed in July 2000 at a cot of 565 million dollars. Brisconnections, a 6.8 km tollway, due for completion in 2012 at a cost of 4.8 billion dollars. The ED got 17.4 million trips last year, for 73.7 million dollars net revenue.
http://www.transurban.com.au/transurban_online/tu_nav_black.nsf/obj/SHR+08/$file/040.htm
I guess this raises the obvious question: Are you friggin nuts?