San Francisco currently has ~54% of its eligible population having cars registered to them. There are a lot of one-car families as well as e-bike families who d

San Francisco currently has ~54% of its eligible population having cars registered to them. There are a lot of one-car families as well as e-bike families who don't want a car. If that increased to 100%, you wouldn't be able to park anywhere without paying a lot, and getting anywhere would be super slow. It might make sense on a per-individual or per-trip basis to say that you prefer using a car, but if everyone makes that choice (old used cars are fairly cheap), it's a problem.