I was about the type the same thing. The last car my mother had sat for long stretches in the driveway and the rotors rusted/pitted and the calipers seized up. Pretty expensive fix.
Originally Posted by
Spld cyclist
This doesn't apply to San Diego, but I once had to replace the rotors on a vehicle, long before their time, because they became excessively pitted and ineffective. In a corrosive climate, you need to drive often enough that the pads wipe away the surface rust regularly before it becomes something worse. I think my mechanic said the minimum was once per week during the winter.