It was created in 2015 as an answer to a challenge - by a computer scientist. Quite an interesting read actually, if you follow the link in the article to his actual blog here -
http://www.randalolson.com/2015/03/0...cross-the-u-s/
This year he created another one, adding a different twist the challenge, which required different coding to solve -
http://www.randalolson.com/2016/06/0...imited-budget/
I find it all fascinating, and as he states in his article this year, it's a starting point to see what you want (number of locations), in the manner in which you want to see it (days on the road).