With regard to the article “Final designs for Riyadh Metro Line 3 train unveiled” (Oct. 29), why is it that a public facility such as this should have classes?! If you look at the underground system in London, which is one of the best systems in the world, all carriages are the same. There is no VIP/first class in developed countries. The word public refers to all members of the society equally, without any discrimination. Abdur-Rehman, Online response