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). Besides the film's soundtrack, it can also be found in Drexler's seventh album "Eco"; in the soundtrack the bassist Jeff Eckels also performed.
El Niágara en Bicicleta "El Niágara en Bicicleta" (English: Niagara Falls by Bicycle , literally "Niagara Falls on a Bicycle") is a song written and performed by Dominican singer-songwriter Juan Luis Guerra and his backup vocal group, 4-40. The track was released as the third single released from his eighth studio album, Ni Es Lo Mismo Ni Es Igual which Guerra produced by himself. The single became a success on the Top Latin Songs and Latin Tropical Airplay chart where it peaked #2. It was the best-performing Latin Tropical Airplay song of 1999.