Edit: correction from dragonwriter, via wikipedia [1]:
"The cost of the initial San Francisco-to-Anaheim segment was originally estimated by the CHSRA to be $33 billion (2008) / $35.2 billion (2013), but a revised business plan released in November 2011 by the CHSRA put the cost at $65.4 billion (2010) / $68.9 billion (2013) / $98.5 billion (YOE). The latest plan has revised the costs down to $53.4 billion (2011) / $54.5 billion (2013) / $68.4 billion (YOE)."
[1] http://en.wikipedia.org/wiki/California_High-Speed_Rail#Fund...