This is a driverless, elevated taxi system for cities based on recirculating pods.  This Polish concept is very well thought out. We see great potential for it in built up areas like cities – for example, New York City, which is built on rock and cannot easily expand its underground transport. We’ve had our eye on it for a while but it was recently covered by CityFix in this excellent article about PRT: http://thecityfix.com/blog/personal-rapid-transit-replace-90-percent-cars-innovation-technology-public-transport-janice-ho/

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