This sounds a bit like the inter-city taxi system in Morocco. There's a central taxi park where you go and drivers call out their destination and number of seat

This sounds a bit like the inter-city taxi system in Morocco. There's a central taxi park where you go and drivers call out their destination and number of seats remaining. When the taxi is full (or its getting close to the end of the day), it goes. They'll drop you at your specific destination in the other city. They call these "Grand" taxis. There are also "little" taxis you can take within the city and hire on an individual basis (i.e. you don't need to wait for them to fill up).