Polar Donkey just sent me some maps that prove his point (comments re: Fill 'er up) that, with so many employers located along Germantown Parkway, people might gravitate there instead of the urban core.
In this map of total employer establishments by zip code, downtown does have a lot of employers, but so do big chunks of Cordova and East Memphis. (Click to enlarge.)

What I think is interesting about this 1990 commute map is that the highest commute time on the map is 17-18 minutes (in red). Most people in the area had a less than 15 minute commute.

But when you compare that to the 2000 commute map, a commute of 1 to 18 minutes (remember, 17-18 miles was the longest commute in 1990) is the shortest commute. Sure, the longest commute on the 2000 map is 26 minutes (and comparatively, that's not horrible) but the Frayser commute almost doubled, from 12 to 14 minutes to 23 to 24 minutes. And in Whitehaven, you see basically the same thing.

Thanks, Polar Donkey!
