It’s natural to model intersections as if cars were the only mode that mattered—especially when computer drivers make every move predictable. The driverless intersection we presented a few years ago, based on work from computer scientists Peter Stone and Kurt Dresner of the University of Texas at Austin, made the same assumptions: lots of cars, no people or bikes.
And each time city leaders promote one of his [Elon Musk’s] fantastical ideas—tiny tunnels! autonomous vehicles! platooning!—it does serious damage to the real-life solutions being proposed by experts that will actually make life better for their residents.