San Antonio Center is very much starting to look like a downtown, complete with the dense apartment blocks over street-level retail, underground parking garages, 11-story apartment buildings, and pedestrian-only alleyways. It's still sort of a hybrid development, because the Walmart side of the block hasn't been redeveloped yet and features a giant parking lot and all around them are tiny 1950s-style strip malls and small apartment complexes that literally were built in the 60s, but you can see in both the zoning codes and satellite photos of the area redeveloped that they were going for a real city in density & usage.
I remember thinking, when initial development started around 2010/2011 and all the news was about traffic on 101 and Google shuttle buses making life hell in the Mission, that it looked like the solution was to bring the City to Mountain View rather than bring all the workers from the City.
They get away with this because the area was basically barren strip mall & parking lot before redevelopment - it was the old Sears store, plus Shockley Semiconductor (which I think had been turned into a small grocer that nobody except tech tourists visited), plus a few other old-economy retailers that were going bankrupt. There weren't actually any neighbors to get mad, plus I doubt they'd shed a tear.