There are a few things you need in order to build a Lego RC car. The first is a small amount of Lego, which you can get at most toy stores. You will also need some wire, some screws, and some nails. The next thing you will need is the car body. This can be found at most toy stores or online. The next thing you will need is the cockpit. This can be found at most toy stores or online. Finally, you will need the wheels and motors. These can be found at most toy stores or online. Once you have all of these things, it is time to start building your car! First, take the cockpit off of the car body and place it on the ground. Next, take the screws that hold the wheelbase together and remove them. Next, take off the wheelbase and place it on top of the cockpit. Now put back together the screws that held it together before! Finally, put on your car body and enjoy your new Lego RC car!