Do you see specific parallels with the Fla and NJ projects that would appear to make them comparable to the Big Dig?
I only ask because it seems like you could cite the Big Dig to scare governments away from ANY significant infrastructure project.
I know you didn't ask me, but the only real parallel I see is with the likelihood of cost overruns. I'm not from that area, but as I understand it the Big Dig was needed, and is heavily used, both of which sharply distinguish it from the FL rail project.
Where they are similar is that the cost estimates are exceedingly optimistic. Although I'm not sure that you had as much foreknowledge of that fact with the Big Dig as you do with the FL rail project. That is, it is possible that everyone involved with the Big Dig was genuinely surprised to watch the costs climb as much as they did. I'm sure that were the FL HSR to be built there would be lots of politicians feigning surprise that the construction cost was much higher than expected, or that it was bleeding red ink in operations because nobody was riding it. But the surprise would be just that, feigned, because we already know that it's going to cost more than they are projecting (HSR projects always do), and we also know that there won't be any reason for anyone to ride it.