These files are contain car 2d data (dxf) and 3d data(stl) that will allow you to manufacture using 8mm thick wooden plate. If you want, you can paint and use without wheels and wheels. it will be fun and educational for your children. have fun.
STL (Stereolithography, filesize: 825 KB), DXF (DXF, filesize: 285 KB), BLEND (Blender, filesize: 709 KB)