Gentlemen, start your babies! People are going to have to buy more than one of these wheeled, pull-back babies to truly race them. Just line up the soft vinyl and plastic, 2-1/4" (5.7 cm) bundles of joy and start the countdown. They haven't learned to walk yet, but wait until you see their speed in a straightaway. When they take a pitstop, it's not the tires that need changing.