Similar to the Crazy Ideas Thread and Diaspora Roundup Thread, I thought I'd try making a General-Purpose Questions Thread.
The purpose is to provide a forum for asking questions to the community (appealing to the wisdom of this particular crowd) in things that don't really merit their own thread.
If you dig down 3 links you find the Commuter's Paradox. I found this paper to use very reasonable controls and explain itself well. Sadly, it doesn't address your question about different modes of transportation.
Similar to the Crazy Ideas Thread and Diaspora Roundup Thread, I thought I'd try making a General-Purpose Questions Thread.
The purpose is to provide a forum for asking questions to the community (appealing to the wisdom of this particular crowd) in things that don't really merit their own thread.