Well, the Chicago Transit Authority (CTA) who runs all the trains and busses in Chicago proper say I can take the bike on the bus or train anytime because it folds. Most of the busses in the city have bike racks built on the front of them so that's an option too.

Now the METRA (suburban commuter train into the city) says I can take it on so long as its in a bag.

I got a folder mainly for security reasons. I've lost enough bikes to theft so I wanted to get something I can bring into the office with me (and the house too). The rent-a-cops at my building would never let me in with a bike, but folding it and putting it in the bag shuts them up. Technically I shouldn't need a bag, but I have one as a courtesy to the property.

Though it has a full size 26" wheel, once folded it fits nicely in my car. So I can go out to one of the hundreds of parks and trails in and around Chicago with out having to set up some kind of rack on my car.

P.S. I really like your bike, nice paint job and great lines. How do those handle bars work out for you? I'm thinking about changing mine to something like that. because sometimes my fingers get numb when I ride and I have to change my grip to get feeling back in my pinkie and ring fingers.