Do projectors degrade?

[Ls400]

The real problem is the auto industry won't pay for the really good, durable materials and coatings unless and until they're forced to, and any such force will have to come from the top down (governmental edict). It's unfortunate that the world's governments haven't addressed this issue, because it is a direct and primary cause of pedestrian deaths.

This is why I asked earlier about your thoughts regarding "naming and shaming" automakers who don't use durable materials by publicizing the result of lifecycle testing. I think it's pretty clear that the IIHS has already done a pretty decent job of forcing automakers to improve headlight aim at the factory, and they did it without changing a single regulation. Perhaps a rating of Good/Acceptable/Marginal/Poor for how a car's headlights will be in 10 years would shame automakers into aiming for Good ratings instead of Poor?