 "Alba" is an acronym for "Alternativa Bolivariana para las Américas" ("Bolivarian Alternative for the Americas") but is also the Spanish word for "dawn".The Express was joined by road by hundreds of buses carrying members of political and social organisations, protests organizers claimed days before the summit.The group arriving in Mar del Plata aboard the "ALBA Express" went to the World Cup Stadium where Venezuelan President Hugo Chávez spoke to the crowd, then joined the "peoples' march" summoned to repudiate the presence of George W. Bush in Latin America.