One aspect of the car industry that's regulated is headlights. https://www.carid.com/articles/brief-history-of-sealed-beam-headlights-in-us.html https://www.ca

One aspect of the car industry that's regulated is headlights. https://www.carid.com/articles/brief-history-of-sealed-beam-headlights-in-us.html https://www.carid.com/articles/brief-history-of-sealed-beam-... talks about the history of headlights allowed on autos in the US. There was a period when cars were required to have headlights that were interchangeable across all makes and models. You simply bought a round headlight. Things have loosened up quite a bit but the US is behind other countries in allowing advanced lighting technology on cars: https://www.autoblog.com/2018/03/13/why-we-cant-have-better-headlights/ https://www.autoblog.com/2018/03/13/why-we-cant-have-better-... "This is because it doesn't adhere to the inflexible and archaic 50-year-old Federal Motor Vehicle Safety Standards (FMVSS) that require all vehicles to have headlights capable of only switching from high to low beams and not blend the two together, which also rules out MB's Digital Light tech."