While I agree that they are not foolproof you do not use them separately. A combination of active and passive systems is used by the car to understand its surro

While I agree that they are not foolproof you do not use them separately. A combination of active and passive systems is used by the car to understand its surroundings. I would never compare the electronics used in aviation to anything employed in cars, the level of trust in aviation and the regulations behind it are legion. I seriously doubt that manufacturers would want to be under similarly complex and expensive regulation