You want me to take my bike on the train from CT to NYC? Ehhhhhhhhh.....

As far as riding in the city, I'd just be worried about getting creamed by some cabbie, truck driver, bus, out-of-state tourist, or anyone not paying attention. I'm sure it's probably not that bad if you're used to it, but I live in a pretty rural area, and while I ride on main roads with a lot of traffic, it's nowhere on the radar compared to NYC. I guess if I had someone to ride with/follow throughout the city, that wouldn't be too bad.