Every story where the person dies will get reported, and every story where the person is fine will not.
This is true whether the person stayed with their car or looked for help. There is a bias here, but it should make both strategies seem less effective. Since the problem is a lack of normalization, the bias will be stronger for whichever strategy is used more often.
In every single news story that I can remember about someone getting stranded with a broken-down car, the person leaves their car looking for help and they end up dead. Or, if there are multiple people in the car, the one person who goes off looking for help ends up dead and the other people who stayed with the car survive.
My question: If I get stranded in my car somewhere, should I go looking for help? Or should I follow my availability heuristic and stay put? Since I'm still in the process of debiasing myself, should I do the opposite of what this particular mental shortcut suggests, or would that be a sort of bias bias (analogous to the fallacy fallacy)?