London is already well known for the Underground, but a British architect wants the city to become well-known for an above-ground as well. Lord Norman Foster and his partners have proposed a 136-mile cycling network, known as the "SkyCycle," to be built above England's capital. The interconnecting routes would accommodate 12,000 cyclists per hour—all of whom wouldn't have to worry about getting nailed by a car. 

Right now, though, it's still just a proposal. Foster and his partners have proposed the SkyCycle to different bodies in charge of London transportation, but no go-ahead has been given yet. We bet Foster will do everything he can to avoid the same fate as the California Cycleway, a similar plan from from the late 1800s that never came to fruition. 

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[via The Verge