So a 1-2 hour drive for anyone living in Bev Hills, Hollywood, Brentwood, Santa Monica, etc... Not that Union Station is much more central. LA is just too damn big (geographically) to make that viable.
I think the choice of Anaheim was made in terms of moving tourists, proximity to Disney, right of way etc. Also Metrolink & Amtrak go to Anaheim, so you could in theory take the train from the Valley or SD and not have to drive at all
