U-Wall Lizard concept with expandable clawed tires

Designer Zhi Min Lin’s prediction for the future of ground transportation is that cities will become so crowded & dense that new streets will eventually change from the current 2D flat roads into a 3D U shape to utilize limited space. The U-Wall Lizard is a vehicle adapted for driving on these new roads. Four independently powered wheels, expandable clawed tires & a unique suspension system allow it to grip terrain on both horizontal & highly angled surfaces all while balancing the body of the vehicle. [Images and article source]