A subway station near the buffalo paddock in Golden Gate Park, a tunnel to Alcatraz Island—feasible or not, you can have San Francisco review your ideas for transit expansion, thanks to a tool that lets you design and submit your “dream” subway system.
The “Subway Vision” map plots existing major lines in the Bay Area, and asks you to plop in more stations and lines where you think they’re needed. It’s a joint production from San Francisco’s planning and transportation departments (as well as other stakeholders), who want to incorporate some form of crowd-sourcing in the next several decades of public-transit development. Here’s more from the SFMTA blog: