Technically, parody is using X's IP to comment on X; satire is using X's IP to comment on something else. So if this is parody, it would plausibly fall under America's fair use test.
They had 'defeat devices' that detected test environments and changed how the car ran so that it would pass emissions testing.
And only 2 or 3 people are in jail afaik.
Only a light slap on the wrist.
I think about things like a library for leader election, where there is a "Russian hacker" service that manipulates the election result or maybe a logging framework that accumulates logs and occassionally emails them to journalists.
Out of more than 600'000? A bunch, I bet.
(Yes, I was shocked at the number too)
It's also worth saying that even if they don't have a automated system to look for x-infringement, they have many employees who when bored could end up searching for (say) Volkswagen on github.
Whether they care or not is another matter...
https://en.wikipedia.org/wiki/Trademark_infringement#Factors