Underneath the Hot Wheels® City live the Mutant Machines™. The result of a failed lab experiment, these half-creature, half-vehicle machines lurk underground waiting for their chance to take over the world! The Mutants don't “drive” - they bend, connect, slither and stretch with unique movement and styling. The vehicles' “wiggle” motion is due to their animal-like spines, and each can connect at the front and back to other cars to create a long Mutant Machine™ train. These vehicles have a life of their own and allow for enhanced storytelling and push-around play. The assortment include Mutant Machines™ Street Shark™, Skullface® skeleton, Power Tread® tanker and more! For new, imaginative, underworld play possibilities get the whole fleet! Each sold separately, subject to availability.