I'd like to see an interactive version of this where you can change the time period you are considering the savings accross from 5 years to something smaller.

EDIT:

Found this R project on Github:

https://github.com/odeleongt/xkcd_task_optimization

Also, found this chart on Reddit (Money instead of time):

https://www.reddit.com/r/xkcd/comments/31rlfh/remix_of_xkcd_...