Volkswagen's hyper-efficient XL1 edges closer to production
With its skinny tires and inset rear track, the XL1 should offer up interesting driving dynamics, too. All of the quirks of the XL1 can be attributed to the engineering quest for ever better fuel efficiency. Volkswagen says the car will have a slippery drag coefficient of just 0.186, which is far better than anything else on the road today.
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