That's true, though it may be acceptable if more economical. For most geographies, very poor visibility scenarios are quite rare. If it costs 10k more per car

That's true, though it may be acceptable if more economical. For most geographies, very poor visibility scenarios are quite rare. If it costs 10k more per car to support radar for example, then it's likely not worth it. If the cost difference is marginal, then I agree, may as well use whatever sensors are best.