When stealing from cars, should I check the visor?

In 2014, Hinterland answered this post regarding the use of hoods and visors, by saying that both were planned for future use.

Starting in 2016, a few Steam players indeed claimed having found various items (such as chocolate bars, matches or even cartridges) behind sun visors, but most report having found nothing, not even in years of play. Some among the lucky ones specified playing in lower difficulties, implying the overall more abundant loot is a game-changer regarding sun visors.

So yes, it seems that items can be found in the sun visors, but it's fairly recent and really doesn't happen quite often. The best answer would of course be Hinterland's but since aforementioned post they've kept quiet about it, as to preserve the "mystery" surrounding the question and savor the thought of all these desparate survivors hopefully clinging to the sun visors.