Google Maps, Apple Maps, and Bing Maps will all try to murder you if you ask for directions from Santa Maria, CA to Ventura, CA.
The obvious route is to follow the freeway that was built on the best route between the two cities. Instead, all three really enjoy routing you onto a two-lane twisty mountain road that is five minutes shorter if you are driving a sports car and all the lights are green. Heaven help you if you are driving an RV.
I've sent corrections to both Google and Apple about this. They both did nothing.