Volkswagen's XL1 said to be world's most economical car
Friday, January 28, 2011 - 09:00
in Mathematics & Economics
(PhysOrg.com) -- Volkswagen has unveiled its new, prototype super-efficient hybrid vehicle, the XL1, at this week's Qatar motor show. The car has been under development for a decade and Volkswagen claims it is the most economical car in the world.