Interesting that this is an acknowledged commercial re-make of a Cannes award-winning Spanish short film:
"Historia de un letrero" (The Story of a Sign) by Alonso Alvarez Barreda

http://www.youtube.com/watch?v=zyGEEamz7ZM

IMHO the Scottish version is better edited and trimmed to the essentials, and has more impact. It also has about 10 times the views on YouTube.