How Usain Bolt compares to runners from other countries

At least it's more visually engaging than the Tages-Anzeiger's visualization discussed here: https://news.ycombinator.com/item?id=12310032

However, I do wish they could've shown actual acceleration and speeds as opposed to the easily calculated average speed. Wake me up when someone makes the effort to find all the historic footage and overlays it on top of one another.