From the Super Mario Wiki
The 4-Wheel Cradle is Toad's second special kart in Mario Kart DS. It is a vehicle with four large wheels and chassis, resembling a baby walker of sorts. It has good weight, handling, and drift, along with low speed. Its weight is tied with the Cucumber, Standard LG, Standard MR, Standard DS, Power Flower and Wildlife. It is one of the slowest vehicles, though it has great acceleration tying with the Shooting Star, Poltergust 4000 and Light Tripper, and high items. It shares its drift and handling with the Shooting Star, Gold Mantis and Standard WL. Its acceleration and items are its strongest stats, equal to the Standard MR.
The kart is unlocked for Mario and Peach as well when the player gets gold trophies in all Nitro or Retro Courses in 150cc, and becomes available for everyone else when gold trophies are obtained in every cup in Mirror Mode.
Names in other languages