On the other hand, I live in San Diego, and cars act as menaces far more often than scooters when I'm around, probably at a 5:1 ratio. They do menace differently, but I do appreciate how much less dangerously the scooters do it. For example, when someone parks a scooter in a right of way, it's irksome. When someone parks an SUV in a right of way (too close to corner) it makes it dangerous to pull out of that intersection. When scooter riders act entitled to the sidewalk where I'm walking, I can easily bear off. When a driver acts entitled to the road where I'm biking, they often do it by riding only a few feet behind me while laying on the horn.
The scooters seem like better neighbors to me.