Inaugurated on 31 March 2021, a new bus line1 serving the suburban train station of Saint-Quentin-en-Yvelines-Montigny-le-Bretonneux2 and several local business parks in the Île-de-France Mobilités network enables passengers to reach their destination on autonomous electric shuttles. Following previous trials in La Défense and Vincennes, this project, led in close collaboration with Saint-Quentin-en-Yvelines intercommunal district, is a new milestone in the development of autonomous shuttles as a mobility solution by Île-de-France Mobilités, the public transport authority for the Paris Île-de-France region. For the first time, the autonomous shuttles operate alongside regular traffic and feature as a mobility solution in the Île-de-France Mobilités journey planner app, just like the other 1,500 bus lines in the Île-de-France network.