I commute daily from San Francisco to San Jose on Highway 101. One of the busiest, most congested highways in the country; 8 lanes with commuter lanes. I ride a turbo Busa and COULD split betwen cages in short order, but I don't for good reason: I PREFER TO LIVE! Lane splitting, per the California law, is only supposed to be valid during low speed, traffic backups. The morning traffic news often broadcasts of yet another motorcycle fatality somewhere here in the 'Bay' area. I can guarantee that most of these accidents occurred because the biker was lane splitting at high speed. I have almost taken out several bikes (in my cage) who were between lanes and approaching at such a high speed that when I checked my mirror...no bike was visible! If it was put to a vote in CA, lane splitting would be banned. It simply isn't safe at highway speeds. In stopped traffic idling between the cages IS safe; they're not going anywhere and you need to keep the airflow going over your bike's engine/radiator. That WAS the intent of the CA law; 12mph! If you think lane splitting is a good idea, hell, just do it. You can join the legions of others who are 'DEAD RIGHT'. Don't be in a rush...just enjoy the ride!
Just my 2 cents.