I am constantly amazed at the apparent lack of interest in car-pooling when travelling between LUV meetings and the restaurant where we have dinner. After the last meeting I was one of the first five people to arrive at the restaurant and we had arrived in three separate cars. For the most luxurious travel you can have four people to a car and a standard sedan class vehicle can legally and safely carry five people. So an extra seven people could have been comfortably driven to the restaurant and an extra ten people could have been safely and legally driven to the restaurant. But instead most people were waiting in the cold at the tram stop.
Things are quite different in Europe. There was one occasion when after an LSM (Libre Software Meeting) conference in Bordeaux we got 8 people in a Mazda 323, now that’s what I call car-pooling! NB This is dangerous and illegal, so I can’t recommend doing it.