HOT WHEELS® WALL TRACKS™ MID-AIR MADNESS™ Set: With a boost, crashing and fast-paced action come to Wall Tracks™ sets! The booster launches cars up the ramp for anti-gravity thrills. The track works with multiple cars for mid-air madness. And the poster adds a background for the adventure and action. The set and poster can be hung with the included safe-for-walls Command™ strips from 3M. This set gives new meaning to climbing the walls!