The Critter Cruiser and Hamtrack, your pet's friends. This really is an exercise car for little furry friends. Simply pop your pet inside the integrated exercise wheel and watch in amazement as paw power propels the fabulously silly Critter Cruiser along the floor. Pets will have an absolute blast. Each Critter Cruiser features a 3-way adjustable exercise wheel to suit your pet's energy level. Haha, it looks funny!