The £1.2 million Koenigsegg CCXR and £350,000 Lamborghini Murcielago LP670-4 SuperVeloce were parked outside the London department store last week. Crowds of tourists watched in disbelief as a traffic warden first ticketed then clamped both vehicles – which are custom-made in the royal family’s distinctive “baby blue” colour. The cars belong to the oil-rich Al-Thani …