Heavy rail equipment won't fit on its own trucks, but remember this is a streetcar tunnel, so light rail equipment would most certainly fit. The way this has been set up now, however, has the static displays built into place and with the facade on the portal you're not going to get anything bigger than a truck (or a bus, I suppose) into the tunnel.
Moderator: Massachusetts Bay Transportation Authority, Brightline Trains
Avatar:3679A (since wrecked)/3623B (now in service as 3636B).
Avatar:3679A (since wrecked)/3623B (now in service as 3636B).