"The single best reason for stopping rail now is that it will be obsolete by 2040, probably sooner."
.
Just like the fast rise of the internet and cell phones, the popularity of On Demand Transportation will arrive much sooner than most now expect. Anytime something like fast and easy access transportation can be ordered up like a pizza on a cellphone or laptop it will become super popular really fast - driven at light speed by social media.
.
It will be hugely popular to be picked up at your doorstep in the morning chauffeured by a Smart Car/Van that allows you to take a nap, watch videos, read the news and then, bingo, you are right at the front door of your office. 
.
You can be certain that early adopters will be blasting emails and tweets out to all their friends about the wonderful morning commute they had in a Smart Car/Van. 
.
This technology is rapidly evolving on the mainland, even transforming freight hauling as trucks form up in Smart Convoys. It's coming soon to Hawaii.