Connecting a huge city with a crowded suburb by some sort of light rail is a fairly logical thing.
Certainly, much more rational than a high speed train into the desert.
BUT - California politicians have become used to massive debt in fiat money to fund their schemes. Does he have any plan to pay for it???
We already have light rail from the valley to downtown LA. It’s the Metrolink. http://www.metrolinktrains.com/routes/
I’m not sure what he’s really asking for since they just expanded it again this year and have more plans for expansion.