Why is Bustamante's proposed constitutional

Why is Bustamante's proposed constitutional amendment to control gasoline prices a bad idea?

California gubernatorial candidate Cruz Bustamente has proposed an amendment to the California constitution to allow the state's public utilities commission to regulate gasoline prices. Natural resource economist Lynne Kiesling describes some of the problems with this proposal, in this blog posting: "Bustamante's Proposal to Regulate Gasoline as a Utility".