AG Barr is backing a new watermelon-flavoured variant in its Rubicon portfolio with a humorous new TV ad this month. The commercial for Rubicon Watermelon, being rolled out now in 288ml and one-litre packs (rsp: 55p and £1.29), features a woman enjoying the juice drink while watching villagers transporting enormous watermelons. It forms part of a £4.5m brand support package in 2009.