If I remember correctly, the last time I was in LA, whatever freeway I was on was a parking lot so I (I wasn't driving) instructed my little magic phone device to find me an alternate route and it did. I don't think it really routed me through residential neighborhoods, but it probably did somewhat.
The extra traffic is something residents will probably have to deal with, but drivers should stop with the speeding and the rolling stops. They aren't saving them any time. Most aggressive driving doesn't.
