Who is che guevera’s friend who accompanies him in his road  trip by motorcycle as described  in a jorge drexlers song?
Al otro lado del río: "Al otro lado del río" (English: On the Other Side of the River ) is a song, written and performed by Uruguayan singer Jorge Drexler for the film "The Motorcycle Diaries" (2004). The Motorcycle Diaries (film):  The film recounts the 1952 expedition, initially by motorcycle, across South America by Guevara and his friend Alberto Granado.
Alberto Granado