I was in the Marine Corps stationed at Tustin Air Base which was just up from Eltoro back in 1985 through 1987. Yes a long time ago..lol.. seems like yesterday.. Anyway when I got back from Japan I bought a brand new 1985 Goldwing Aspencade. I do everything bass ackwards I know.. I rode the 5 and the 405 many times and there was a lot of lane splitting going on then. I even did it a few times when traffic was at a near stand still, which was often even then. I cant imagine what it is like now. Never saw an accident and cars were largely used to it. Most bikes only did it when traffic was at a stand still or maybe 25mph or so but I have seen it done at near highway speed. That part is crazy stupid. At slow speed its not so bad but like I said most cars are accustom to this. If they made this legal in other states I think it would be chaos. riders would be unfamiliar with doing it and cars would be the same. Southern Cal is almost a necessity at times but other areas of the country concern me greatly.