In Canada, when you're hurt because of someone else's actions, you're able to pursue a lawsuit or claim against that person. The reason you can do this is because of liability law.
Self-driving cars sound great. They're safer, because they get rid of human error. The trouble is that right now they're not ready for fully autonomous driving. What about when they are ready? What if we have cars 10 years from now that will erase human error from the equation? If these fully-automated cars come to exist, but instead of buying one you still decide to drive your 1995 Pontiac Sunfire, and then you get in an accident, will you be found to be negligent simply for failing to have upgraded to an autonomous vehicle?
When you are walking indoors, you never think that you could be involved in an accident. However, a slip and fall could come into play at some point. This is often the result of a faulty floor.