Yeah, using the median is pretty sweet and should hopefully bypass a lot of environment review which is the bane of building anything in CA. Even if it doesn't bypass average car speed, just the comfort of not having to drive that nasty stretch will be a godsend.
My only concern is pricing. It's gonna have to be about 50$ each way to be worth it in my opinion. You can get a flight to a fro for about 150$ and that's out an airport like burbank which is very low security and easy to navigate.