It uses waterproof fabric that also lets air through
Though its product range these days is restricted to automobiles and motorcycles, BMW is no stranger to aviation. After all, that's how it got its start. But that was a long time ago.
BMW: Bus, Metro, Walk. That was the tongue-in-cheek acronym we used to refer to public transport back in Montreal where this blogger grew up, but it's San Francisco that's about to have its underground mass transit system overhauled by BMW.
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Bavaria Cruiser 55 by BMW DesignworksUSA – Click above for a high-res image gallery