how is Indigo and Thurn and Taxis related?
Indigo (board game) Indigo is a 2012 board game developed by Reiner Knizia and published by Ravensburger.
International Road Transport Union The International Road Transport Union (IRU) is the world road transport organisation, which upholds the interests of bus, coach, taxi and truck operators to ensure economic growth and prosperity via the sustainable mobility of people and goods by road worldwide.