I have been posting a great deal from my latest trip so I decided to mix things up a bit and focus on a local obsession of mine: CTA (Chicago Transit Authority) trains. When I moved to Chicago, in 1999, I didn’t have a car so it was sink or swim learning the Chicago Transit network as quickly as possible.  Of course, trudging to a 9 to 5’er to spend my day in a cublicle didn’t exactly give me a fond appreciation of the “chariot” carrying me to my slow and painful daily death. However, having grown up in the suburbs of Philadelphia, riding the SEPTA system maybe twice in…