The Vegas loop is also connecting existing infrastructure, not sure why that would be less constrained in terms of destination than any other public transit project.

Again though, the reason I was comparing the two is because The Boring Company delivered what they promised on budget and in 15mo, which to me sounds like a success story, not one of the "worst municipal infrastructure boondoggles in recent years", especially when compared to CAHSR which is about a decade behind and $80B (or 250%) over budget (so far).

This in turn is why, in my judgement, the response posted by the davidw is not a "good take".