Vroooommmmm Vrooooommmmmm Get your engines going The Step2 Stock Car Convertible Bed will put your child on the fast track to slumberland The Stock Car bed is ideal for mini NASCAR fans. This versatile piece of furniture will stay in your family for generations, as it will transform into a twin bed as your toddler grows. When its being used as a toddler bed, a crib mattress should be used with the Stock Car Convertible Bed. This themed toddler bed will delight your child with its resemblance to a real stock car. Complements any sports themed toddlers room.