Cars as transportation should be dead in the next 50 years, outside of fairly niche (relatively speaking) use cases like construction/maintenance/etc. workers who need to carry large loads or people who live or need to travel well outside of city limits. Research into self-driving vehicles is an important part of improving road safety, but I think we need to focus more on public/mass transit rather than "everybody gets a self-driving pod to go from Point A to Point B".
As someone who loves to go outdoors, and regularly visits family a couple hundred miles away I can't see my families need for a personal vehicle completely going away. But 99% of our road time could just as easily be served with a couple trains and busses instead, freeing up valuable land that is needed by our massive road network as well as the horrendous city designs that have spawned from the assumption that everybody has their own personal vehicle.