It will be a great idea when the reliability of the system will have a large number of nines, so chances that you are stranded in the middle of nowhere and the car does not want to start because of a fault will be less than being hit by an asteroid. Other than that, people would consider it an unsafe product and refuse to use it and people vote for what finally becomes a law.
I heard the same argument for electronic gun safety measures, except that no government agency even consider using it for their own guns. Why? They are not reliable enough, yet.