3D printed full rubber tires (new design)

 https://mashable.com/video/new-way-of-cycling-with-airless-tires-that-never-go-flat/?fbclid=IwAR06JMwTqsfge7aN-USasCXUz7cge_RrKOu2UXS7mRWCloPp_FTq9zhX1fo