Back in the 1960s and early 1970s, before the "progressives" took the place over and the child-rapist Neil Goldschmidt built out his cabal (which continues to this day), there was actually a transportation plan for the Portland metropolitan area. Neil and his buddies rejected it; opting instead to "invest" in little two-car light rail "trains". Literally tens of billions of dollars have been spent and continue to be spent in furthering the "vision" of an admitted child rapist (but solid Democratic). That's why we have this today:
The idea was to force people out of their cars, use "cargo tricycles" for freight deliveries, and all sorts of other utopian nonsense. Obviously, the "vision" doesn't work, but the Goldshmidt cabal continues to push rail - including streetcars - and apartment bunkers. The mantra here is "density" - and the Democratics have repeatedly demonstrated that it's not just a buzz-word; it's what they are: dense.
They're all about "green&sustainable" - but what's "green&sustainable" about systematically and deliberately creating a situation in which vehicles idle in politically-created congestion, moving at 0 to 5 miles per hour? Today's vehicles are most efficient at highway speeds, but you can't generally achieve those in the Portland area today. Instead, we get increased emissions.
And the refrain from the Democratics is: We need more rail, to take people where they don't want or need to go!