Because cars sit out in the sun in hot countries all day (unavoidably), the automotive supply chain have developed quite rigorous standards for pretty much ever

Because cars sit out in the sun in hot countries all day (unavoidably), the automotive supply chain have developed quite rigorous standards for pretty much everything in a car. Typically every electronic component must be rated from -40 to +105 C. I'd imagine there's similar requirements for all the interior parts of a car too. Cars have a lot of glass, so get very hot in direct sunlight and quickly reach ambient on cold nights. The reason cars take so long to "catch up" to consumer electronics (eg it's only in the last year or two that large LCD displays have started appearing in cars, or that LED headlights have become commonplace) is that the car design cycle is very long - typically about 7 years. Tesla decided to do things differently, which meant they could iterate much quicker. It also meant they used components not qualified for automotive use. Mostly they got away with it, but there have been some issues (for example their large displays started failing in hot countries).