Salvage wood from palettes, then nail the pieces together to make a structure like below. You need the two boards along the bottom to be rather solid. Leave two holes in the top so the “driver” can see where to go. The wheels are taken from supermarket carts. Nail and tape pieces of cardboard over the structure, then decorate and cover with slogans, such as “I pollute, I render my driver aggressive and never will I let you live until 2012!”

- Bea Burdeau

Here you can find detailed schemes of how to make your own green automobile - without motor, plastic and fuel. Enjoy and have fun on your carfree event!

The other scheme is bigger, please have a look