Brain Box Car Experiment KitBrain Box Car Experiment allows you to make and play with the assembled car. Brainbox manufactures a great range of electronic kits with a cool, easy to use press stud system for making the contacts. It's kind of like classic electronic kits but much easier to use, with no pesky wires to lose or risk of injury. As with all Brainbox kits, there is no soldering or trimming requiredthe kit uses simple, brightly coloured components with press stud