Metal Machines Color Changing Die-cast Car by ZURU Get 2 epic cars in one with ZURU's new Metal Machines Color Change cars. Simply dunk the car in hot water to watch it transform into a sleek new style. Then dunk it in ice cold water to change it back to its original design. Metal Machines cars are compatible with all Metal Machines tracks as well as those of other brand leaders in 1:64 scale. Collect all 13 for the ultimate color-changing race. Unleash these die-cast cars and hit the track in unrivaled color-changing style with Metal Machines Color Change cars!