Not so long ago the notion of an eco-friendly vehicle meant small, boxy and decidedly uncool. But the push towards hybrid and electric vehicles in recent times has changed all that - if supercars can be hybrids, why not limousines? Citroën’s international design team has created the Metropolis plug-in hybrid-limousine concept for the Shanghai World Fair. The imposing 5.3m long by 2m wide by 1.4m high vehicle produces impressively low CO2 emissions of just 70g/km via a 2-liter, V6 petrol engine and an electric motor developing 70kW at its peak.
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