Your car’s wheels spin around a stationary axle, and in order for them to do so, something has to allow for “slip” between the two. That something is a wheel bearing. A vehicle’s wheel bolts to a hub, ...
Visionary films set in the technologically advanced future have long imagined cars that ride around on frictionless orbs similar to Star Wars’ BB-8. We aren’t there yet, as cars still use wheels and ...