I don't have details, but apparently BART was originally drawn up to encircle the South Bay but that was torpedoed by the local communities on the peninsula jus

I don't have details, but apparently BART was originally drawn up to encircle the South Bay but that was torpedoed by the local communities on the peninsula just like high speed rail to LA. It's sort of crazy making to think about how much better BART would be compared to the apocalyptic, earthquake-inducing rumbling and dinging bells of Caltrain with at-grade crossings and monthly deaths (sometimes intentional, sometimes not).