Based on the video, it looks like Vimeo's co-founder lives in the Mission district of SF. In my experience living hear for nearly a decade, the traffic norms around here are terrifying. I lived in the area years ago and the number of times cars would blow through stop signs in broad daylight around pedestrians stunned me.
I'd love to see more flow-control measures like speedbumps, etc. Walking around the area should be enjoyable - lots of trees & shops. The potential for erratic drivers causes me to avoid the place.
Other parts of the city are much safer (at least outside the main high-speed corridors). The Mission is full of stop signs and what you'd expect to be slow-speed traffic - reality is far different.