I made the Play Pal Monster Truck from a pine 2x4. It's finished with hand brushed shellac and the axle hubs hubs are painted with metallic green acrylic craft paint.
If you look closely at the photo of the bottom of the body you can see a small crack where the axle peg is inserted. This is a problem I see a lot of working with big box store 2x4s. This one cracked when the axle peg was inserted. Some times the wood will crack or just crumble away ruining the body when the hole is being drilled. I think this one is fine since there is lots of glue in there to hold things together.
Advanced techniques are the basics perfectly applied.