High-density housing with shopping and offices in walking distance would be massive steps towards solving Americas transportation problem. But this goes against

High-density housing with shopping and offices in walking distance would be massive steps towards solving Americas transportation problem. But this goes against the current US culture, so I'm not holding my breath. Better public transit is also great, but that's also hard to deliver in low-density suburbia. I agree that autonomous vehicles and Uber/Lift won't make travel times shorter. But they might help make the trip better because you can use the time better despite being in a car.