First thing the author started in Calabasas, which is on the edge of Los Angeles County and a significant distance from the City of Los Angeles.
Second, this region in particular - between say, Malibu and San Luis Obispo is notable for its general lack of freeways. There are two in that general vicinity the 118 (east/west) and the 101 (north/south). The reasons for that are complex, but largely because they only started to develop only after Los Angeles was done with its freeway building craze - and freeways are not politically popular - particularly in that region, which is either agriculture or wealthy enough to want no change to the area. Freeways still bring development.
That all said, when I have the time, I always take the two lane highway, just to see what there is to be seen - America is so much prettier and more diverse than the gas stations and food places near the freeway exit, go out and explore, there is a whole world - often in your back yard, that you didn't even know was there.