I saw this great movie on Xfinity, free movies last night and wanted to recommend it .
It's titled "Cycles South" , done in 1971, kind of like a documentary, on 16mm film, but with very good cinematography(in my humble opinion). Three guys head from Colorado to Panama, on what looks like BSA or Triumph 250 single cylinder motorcycles , barely getting out of the states until one terminally breaks and they trade them in for New Kawasaki 175 singles (?)
I saw that it was available on Netflix.
http://www.imdb.com/title/tt0178360/