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Volkswagen XL1

Wonder car: The 111kmpl Volkswagen XL1

After working on the idea for over a decade, Volkswagen has revealed the

near-production version of the XL1, a two-seat, plug-in diesel hybrid

designed to be the world's most energy-efficient automobile. VW

estimates the XL1 can get up to 111 kilometre per litre — although with a

time to 100 kmph of 12.7 seconds, it won't get there quickly.