BMW Recruiting Engineers to Focus on Lightweight, Carbon-Fiber Composites:
Quote from the article:
Carbon-fiber bodies long have been used for Formula 1 race cars and supercars, such as the Mercedes SLR McLaren Roadster, and carbon-fiber components such as roofs and spoilers are not rare on sporty cars.
However, the i3 will be the first high-volume car using the technology, which is based on a material costing as much as E20/kg ($13/lb.).