Tens of thousands of billboards around the country will be used in “the biggest art show ever conceived” this summer.  “Art Everywhere” is a collaboration of five museums that will transform well known places like Times Square into art displays for the month of August.   Curators and the public will vote online to decide which images will be exhibited in the show. The five museums have nominated works by Roy Lichtenstein, Cindy Sherman, Andy Warhol, Jasper Johns, Georgia O’Keefe and others.  The winning works will be displayed beginning August 8 on nearly 50, 000 billboards, buses, subway platforms and other outdoor media.  For more information, click here.