Yes; traffic. Anywhere within an hour to two hour commute to SF or SJ or the peninsula carries a huge premium, and it's not like we can just hop on a train to t

Yes; traffic. Anywhere within an hour to two hour commute to SF or SJ or the peninsula carries a huge premium, and it's not like we can just hop on a train to the city. The yellow line reaches the furthest into the east bay, and all the places along it range from "pretty expensive" to "rich people area". The blue line to Pleasanton...well, it's called "Pleasanton", what do you think it is? Lots of rich people live there and the "downtown" is one street. They complained a lot about BART even running out there ("we don't want that inner city crime coming out this way!"), and BART doesn't run to SJ (not even close; even though that was in the original plans: http://io9.gizmodo.com/5866928/a-map-of-san-franciscos-subway-system-that-almost-was http://io9.gizmodo.com/5866928/a-map-of-san-franciscos-subwa... ). IMO if we had proper mass transit, it'd alleviate many of the real-estate problems we see now. All the low density and NIMBYism makes that a pipe dream, for now and the foreseeable future.