>>1290522>just use imitation heritage trolleyThey already have them at California Adventure. I don't think they go very fast, though.
Also, Brightline is planning to extend its line to Orlando int'l Airport (station's already built) and then to Tampa after that. There is a possibility of a stop on Disney property on that stretch. Currently all Disney theme park resorts around the world have connections to external rail networks, except the ones in America.