Two leading car designers at the Product Design + Innovation conference in London last month provided insights into the thinking at BMW and McLaren Automotive, carmakers that are leading the way in developing lightweight vehicles that rely on composite materials. The BMW i3 electric city car will be the first in a series from the German group which will have a CFRP body structure. BMW has worked closely with SGL Automotive Carbon Fibres in the development of these materials. At the conference, Benoit Jacob, head of design at BMWi, discussed the company’s open approach to new materials. He said BMWi has looked at the possible use of plastics reinforced with natural fibres for interior trim parts, and also textiles made from recycled PET. The BMWi design programme has more freedom than traditional BMW car designs. For example, BMWi cars do not require a big hood housing a combustion engine. In answer to a question about whether a car can be both lightweight and premium, Jacob said: “It’s not a contradiction. It depends how clever you design.” Speaking in a different session at the conference, Frank Stephenson, design director at McLaren Automotive, questioned whether electric cars will form the future of the automotive industry. The principal quest is reducing car weight and bringing down the cost of lightweight technology, he said. Looking to the future, Stephenson tantalised delegates with the prospect of a colour-changing chameleon car.