https://www.wired.com/2015/08/pretty-maps-bay-area-hellish-commutes/
This is a blog by Wired that illustrates the Bay Area commute using a series of interactive maps. There are 3.3 million Bay Area residents who commute to 110,000 different areas. The maps were done by Alasdair Rae and the blog is written by Greg Miller who published it in 2015.