The article is wrong. Facebook (and Google and Yahoo) isn't mostly white guys. It is mostly white and Asian guys. White representation in tech is not, by and large, larger than their percentage of the population at large. It is that Asians are vastly "over represented". These articles always lump Asians in with the white guys because they have no interest in pointing out that if your metric is proportional representation you are talking about getting rid of Asians.

I can't speak to what the car manufacturers are doing, but Google's algorithms do not include a neural network. They do use "machine learning", but neural networks are just one form of machine learning.