I have a similar story! My family was having a reunion at a restaurant but some people didn’t know how to get to the restaurant (before GPS or mapquest), so my dad told them to follow him in their cars. My dad was driving in the first car and there were like 3 other cars behind us with family. As were driving on the highway my dad dumps a bag of pistachio shells out the window (idk where he got the bag from) and pelts all my family’s cars. It was so funny when we got to the restaurant and all the cars behind us were super confused about the pistachio shells.
The retirement community my elderly uncle lived in worked with a local hospital that would schedule all the appointments for the same day, around the same time. They had almost every specialty in the same building so the residents could see the various doctors they needed. But if you had your own doctor at a separate place, you could schedule it ahead of time and they would drive you there. However this was a high-end community that cost a lot, so I’m sure if cheaper places would offer the same options.