You could either do this as a large group project, or individual pictures.
What you need:
- ready mix paints
- trays
- paper
- old cars and other wheeled vehicles
- long sleeved aprons
How to make your racing car printing picture:
Put the all the cars in the trays of paints ( not too much paint at any one time and one tray for each colour), then roll the cars over the paper to make your tyre and car patterns.