German grocery chain Lidl is taking Coca-Cola’s iconic Christmas Caravan head-on in the U.K.The food retailer, which operates more than 12,000 stores in Europe, is turning a can of its Freeway cola store brand into a truck weighing 15 tons and measuring 20 meters long and five meters high.The Freeway can on wheels debuts at the same time as the annual Coca‑Cola Christmas Truck Tour, where Coke’s similar Christmas Caravans will visit cities across the world. The illuminated trucks, created U.S. agency W.B. Doner, first debuted in 1995. Richard Exon,…