Laughing to the bank
It's scheduled to publish an analysis in April of how the Caltrain corridor would accommodate high-speed trains.
simple answer, it won't work!

The Mountain View Leaders should join the effort to mitigate the damage to Mountain View that this project will inflict, we need to fight it now while it's still somewhat in the planning stage not after the preliminary designs are published. Where are the city Council Members, they seem to be lost in trivial issues when they should be spending most of time time working to make sure that this project is not constructed at grade or above grade, use cut and fill and then make a park over the underground system. This park would make a great new trail through town.