There are a few things you need in order to make a car in Scrap Mechanic. The first is a car. You can find these at the junkyard or at a garage. The second is some tools. These include a saw, drill, screwdriver, and hammer. The third is some parts. These can be found at the junkyard or at a garage. The fourth is the scrap metal you will need to make your car. This can be found at the junkyard or at a garage. The fifth and final thing you will need is some paint and bodywork. This can be found at the junkyard or at a garage.