That's right the average speed between NYC and Boston is around 60 mph. It's not high-speed rail, which is 150mph+.

Beijing to Shanghai, for example, is currently averaging 186mph, and if they get back to initial goals, they'll average over 200mph.

http://en.wikipedia.org/wiki/Beijing%E2%80%93Shanghai_High-S...

In short, NYC to Boston should be 90 minutes by train.