Broadway glam masks rocky story, by Chris Jones
On Broadway, where <cite>Million Dollar Quartet</cite> opened Sunday night, the humble old garage that once simultaneously hosted Johnny Cash, Elvis Presley, Carl Perkins and Jerry Lee Lewis undergoes an eleventh-hour levitation into the rock 'n' roll heavens. Klieg lights are revealed. Spangled jackets descend from the flies. And <cite>Million Dollar Quartet</cite> gets an audience-rousing finale that looks like it …