It's been more than ten years since Dr. Ferdinand Piëch started playing around with the idea of a car that asks for only 1-liter of fuel in exchange for 62 miles of travel. A decade on, the XL1 is production ready. Here is how it works.
Showing a high-mileage prototype in oil country? That takes some brass ones, Volkswagen. The company went to Qatar to reveal the XL1. VW says the diesel hybrid can travel more than 260 miles on a gallon of UAE tea.