It was a beautiful Los Angeles Saturday morning, pretty much like every other. B and I made our way on foot to one of our favorite brunch places, where we sat outside and watched passersby while devouring our way through a delicious meal. The narrow sidewalk was full of people - both those sitting at the restaurant and those walking past - and Sunset Blvd roared a few feet from us as a row of parked cars provided a "buffer" of sorts between this crowd of people and vehicles zipping past at 30-40 miles per hour. For most Angelenos, this experience of outdoor dining complemented by the constant thrum of engines and smell of exhaust is pretty standard. It's the price we pay for a street system that places automobility above all else. Even with that, however, I was unprepared for what I saw next.