At a splashy event in New York City last week, General Motors unveiled its new tech roadmap centered on AI-driven vehicle development, advanced battery tech, high-powered car computers, and autonomous driving. Some of this was old news: We already knew the automaker was developing hands-free, eyes-off driving automation and had been prototyping new battery chemistries. In a sense, the real purpose of the event was to showcase how all these pieces fit together.