Thesis about self-driving cars

I’m currently working on my master thesis about liability regarding self-driving cars. Right now i’m at the point where I want to discuss the position of the producer of the car concerning the trolley-problem. In other words, I want to know if the ethics-choice of producers of the software of a self-driving car is influencing product liability. The point is I can’t find any good sources. Does anybody have a useful article or other kind of source that can help me out? Would be much appreciated!