For years, it was rumoured that Cadillac wanted to build a super luxury sedan. A car built to feature the very peak of Cadillac's American-derived pursuit for lavish motoring, the proposed vehicle would likely be found with a six-figure price tag and face rivals like Mercedes-Benz and BMW head-on in the top-tier four-door market. More than a decade ago, the Cadillac Sixteen concept car teased the world for what a car from the General Motors premium brand may look like. Despite the intrigue to the idea, the plan has been nothing but a fairy tale story; that is until this week when General Motors delivered a major announcement regarding future vehicle production. On Friday, General Motors formally declared that a new high-end Cadillac will become an addition to the luxury vehicle line-up for the near future. A rear-wheel drive sedan to be built on unique vehicle architecture, the new car promises to involve "custom-designed materials". Without delivering an...