If you ride in the rain, we don’t recommend the DIY Cardboard bicycle that costs $30 to make but if you do live in a hot country, this cardboard bicycle might save you some dollars and help re-use some of that leftover cardboard.

Phil Bridge, 21, of Stockport, Greater Manchester, believes his “ultimate green machine” will be cheap enough to attract occasional users while also deterring thieves.

The frame, made out of cardboard normally used in industrial packaging, could be produced for as little as £3.

Once the wheels and chain had been added the total price might rise to only £15.

via treehugger

A Lithuanian builds a car from scratch using polyurethane foam.  It’s an amazing work of an art.  Perhaps he did it because foam weighs less than other meterials?

The car is probably not your daily driver but still, with the 30″ chrome wheels, you can at least look good in it.

Polyurethane, the wonder-polymer used in everything from appliances and textiles to electronics and footwear, is apparently the car building material-of-choice for this “sculptor” in Lithuania. You’d recognize his particular mixture of the foam as the same type of messy stuff we use to fill cracks and gaps around windows. Tossing all OSHA and DOT regulations out the window (no problem in Lithuania), this crafty coach-builder mixes up batches of PU foam in 2-liter soda bottles before “applying” them to the framework of his creation. Held in place by scrap cardboard until it sets hard, the foam can then be sculpted, sanded, primed, and eventually painted.

via autoblog