The mobility system in the United States is unsafe, inequitable, and environmentally destructive. Most Americans rely on personally owned, individually occupied, and gas-powered cars—a status quo that leads to tens of thousands of people dying each year in collisions, creates barriers to employment and other opportunities for people of color and people with low incomes, and maintains a resource-intensive transportation system that contributes to climate change and spurs sprawling land uses that destroy ecologies. Autonomous vehicles (AVs)—self-driving cars that can travel along publicly accessible streets some or all of the time without human involvement—could help mitigate these problems, if they are implemented in a thoughtful, well-regulated manner. However, if deployed haphazardly with inadequate oversight and regulation, they could produce even worse inequities than those caused by the current system.