My parents drove older cars — somehow I’m not dead yet. Nor were we stranded at the side of the road basically ever. (The one time that happened involved us being sideswiped by a drunk driver at a toll booth with two Japanese exchange students in back, but that’s another story and beyond anyone’s control anyway.)
And we have narrower roads with smaller shoulders than you do in San Diego 🙂 You can’t fear every unlikely occurrence that the media says might happen. If something does happen, pull as far off the road as you can, get out, walk away from the road’s edge, and call for help. That wasn’t so hard, was it?