Yes. The embarcadero is a nicer road than queens blvd. Queens blvd was built intentionally too narrow to allow the eventual addition of light rail. Basically, they chose drivers slight convenience over transit users large inconvenience. The it only takes that train on the embarcadero 15 minutes to cover the entire length.

As for the tunnels: No! Since humans require fresh air and sunlight, if there are gonna be tunnels leave them for the machines