Citroën unveils concept car with cardboard roof, light-weight windscreen

Citroën has unveiled 'Oli', a concept car made with a cardboard roof and a vertical windscreen designed to reduce the amount of glass needed and also the car's overall weight. The cardboard in Oli's roof is a specialised honeycomb format reinforced with plastic coating on each side. Oli is designed to be recyclable and can last at least three generations.