POWERFUL PULLBACK ACTION: The powerful pullback motor accelerates the Auto Tread with ease and without batteries. GRIPPY RUBBER TIRES: The rubber compound on the tires allows for a grippy ride. No air required. OFFICIALLY LICENSED: Shadow is part of the NKOK collection of official licensed Sonic products. Collect them all! (each sold separately). The G.U.N. (Guardian Units of Nations) Auto Tread is a powerful vehicle that was premiered in Sonic & All-Stars Racing Transformed. Shadow commanded this icon in every which way. All of the fun: pocket-sized! Pull back, let go, and watch Shadow race!