302mph. Not bad.
Though as I've said before, while I certainly would get behind spending obscene amounts of money building such things anywhere it made sense, it's also the case that given limited resources I'd do other things. First I think improving intra-city transit systems, where possible, would be be a priority. And second, while crazy high top speed numbers are impressive, what's really important is average speed. More than that, an average speed of just 90 MPH would be more than good enough, if not awesome, in plenty of places, as long as service is fairly frequent and reliable. 90MPH means 360 miles in 4 hours, making it preferable to both flying and driving in many cases.
