In the future, our cars will be smart, and our tires will be smarter, suggests Michelin. Its Vision concept unveiled the potential of tire technology. For starters, it’s airless, eliminating the need to worry about pounds per square inch. It’s also made from recycled materials in an effort to reduce waste. But the most impressive feature may be its 3D-printed treads, which can be swapped in and out to accommodate various road conditions without changing the tire itself.