Ball Bearing Might autonomous cars be borne on airless basketballs?

摘要

All tires are round, right? Yes, but only when viewed from the side. From straight ahead or above they're kind of rectangular, which is why they only roll in two directions. How limiting! Wouldn't omnidirectional, spherical tires be awesome? They'd allow slide-in parallel parking with millimeters to spare, zero-yaw lane changes, and pivot-in-place U-turns.