Audi A8 will be the first Level 3 autonomous car on the road

[DanceswithUnix]

Image recognition for beemer or audi badges wouldn't be too hard to add to the car's computer

Perhaps you don't get how these things work.

No-one programs a self driving car, it learns much like we do. So if Audi/BMW drivers are a genuine threat, it will learn to recognise them as such automatically. Or more likely atm, it will learn how driving humans respond to those cars by monitoring inputs and what a reference driver does.

So what would be really interesting would be to find out whether the neural net has learnt to recognise specific cars

And who is writing the software?
Humans. Bug-ridden humans.

If the "software" is values in a neural net then the main human input is in providing new training data to improve a case where the car didn't behave well. The argument here is how big a net you need to exceed human driving ability given it is a dedicated task which makes it easier for the car, but we have magnitudes more synapses than some little Nvidia card can emulate.