:There are numerous ways to harden circuitry against radiation. The amount of radiation a car is exposed to is orders of magnitude lower than that of an airliner at cruising altitude, which is further orders of magnitude lower than that of a spacecraft, both of which rely on far more, and far more complex, electronics than cars. Triple redundancy may be prudent in those applications, but it seems a little overkill in this situation to me. I'm going to reword that part so it doesn't prescribe a specific solution without anything to back it up.