Batteries, energy, computer vision, deep learning, and crash safety. I'm most excited about better and better virtual human body models reflecting actual human sizes (male, female, adult, children, obese, average sized...) being released for testing, instead of the old default-male crash dummy.
Having said all that, I only use my car on holidays. I bike to work and prefer to take long distance trains for work related trips. So, yeah, fuck cars and fuck ever expanding roads. Streets are for humans, not for cars and parking.